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| 11 Apr 2016 04:11 PM |
i dont get this problem on my homework
3x + 1 = 7
isnt there already an answer? isnt the answer just 7? |
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Natapanda
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| Joined: 24 Jun 2014 |
| Total Posts: 1771 |
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| 11 Apr 2016 04:11 PM |
right?! seriously right?! i am bad at math.
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| 11 Apr 2016 04:11 PM |
| You're trying to figure out the value of "x." |
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| 11 Apr 2016 04:12 PM |
2
We are nothing more or less than what we choose to reveal. |
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| 11 Apr 2016 04:12 PM |
"2"
someone thinks they're a real badass for solving sixth-grade math lmao |
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Annxt
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| Joined: 06 Dec 2014 |
| Total Posts: 192 |
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| 11 Apr 2016 04:13 PM |
no. leave this website.
Ɓяσкєη Ɗяєαмѕ Ɗαηк Mємєѕ |
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| 11 Apr 2016 04:14 PM |
| It's fine OP', it's hard for me too. |
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Buddhis
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| Joined: 08 Jun 2014 |
| Total Posts: 4227 |
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| 11 Apr 2016 04:14 PM |
3x+1=7 -1 -1 3x=6 _ _ 3 3
x=2
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| 11 Apr 2016 04:16 PM |
| lol a few people fell for the bait |
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kyashinu
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| Joined: 31 Oct 2011 |
| Total Posts: 481 |
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| 11 Apr 2016 04:16 PM |
How is that even hard I can literally do this in my-No.
Look, if you need help, I'll explain it to you, since you're probably new to it.
Your goal is to isolate the variable, x.
Since you are going in reverse order of operations, you first subtract 1 from 7, as you are reversing the addition. So, you get 3x=6 Second, you divide 6 by 3, getting x=2.
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| 11 Apr 2016 04:16 PM |
"but x is already 7?"
No. X is only seven when we multiply it by three and then add one, as states the problem. |
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CafeMiner
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| Joined: 01 Jan 2013 |
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| 11 Apr 2016 04:17 PM |
x equil 3
is because 3+3+1
is it equil 7
ur welcum
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GIaceons
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| Joined: 29 Jun 2015 |
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| 11 Apr 2016 04:17 PM |
3x2+1
because through having the answer you determine the value of the variable because you can substitute x for a 2 and it would make sense as other numbers would not
so x = 2
i dont know why i spent time explaining this
http://www.roblox.com/temmie-sleepy-item?id=332151568 sleepy temmie |
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chicka123
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| Joined: 05 Jul 2008 |
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| 11 Apr 2016 04:17 PM |
| just circle x like a smart ass |
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kyashinu
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| Joined: 31 Oct 2011 |
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| 11 Apr 2016 04:18 PM |
| im actually surprised by the amount of sweet oters who took the time to explain this to me |
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kyashinu
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| Joined: 31 Oct 2011 |
| Total Posts: 481 |
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| 11 Apr 2016 04:20 PM |
Dude I just have a primal urge to correct things I can correct.
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
Or something. Maybe I just have too much time.
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| 11 Apr 2016 04:20 PM |
You want to isolate the variable "x."
"x" is not equal to 7, as you have claimed it to be. "3x + 1" is equal to 7.
You want to find out what "x" is by using something called "inverse operations" to isolate the variable, or to move all of the stuff except for "x" to the other side.
3x + 1 = 7
First, we want to move the 1 to the right side. Because 1 is being added, we can use the inverse operation of adding, which is subtracting, and subtract 1 from both sides of the equation.
3x + 1 - 1 = 7 - 1
3x = 6
Now, since x is being multiplied by 3, we want to use the inverse operation of multiplying, which is dividing, to get the 3 over to the other side.
3x / 3 = 6 / 3
x = 2.
Hopefully my explaination will be beneficial to you.
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| 11 Apr 2016 04:27 PM |
Here are some things to take note on:
1. Inverse Operations:
Adding is the inverse operation of Subtracting, and vice-versa.
Multiplying is the inverse operation of Dividing, and vice-versa.
Raising to the nth power is the inverse operation of finding the nth root, and vice-versa.
2. Properties of Equality:
Addition Property of Equality - If you add something to one side of an equation, you must add the same thing to the other side of the equation for the equation to remain equal.
Subtraction Property of Equality - If you subtract something from one side of an equation, you must subtract the same thing from the other side of the equation for the equation to remain equal.
Multiplication Property of Equality - If you multiply one side of the equation by something, you must multiply the other side of the equation by the same thing for the equation to remain equal.
Division Property of Equality - If you divide one side of the equation by something, you must divide the other side of the equation by the same thing for the equation to remain equal.
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