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2006-06-24 10:41:35 · 10 answers · asked by Dottie H 1 in Science & Mathematics Mathematics

10 answers

3x-4x+12 = 6x + 8
4 = 7x
x = 4/7 or 0.571....

This is dam simple math.

2006-06-24 10:47:43 · answer #1 · answered by Xtreem 2 · 0 0

The first thing that you have to do is multiply in order to get rid of the parenthesis.

3x - 4(x-3) = 2(3x+4)

3x - 4x + 12 = 6x + 8 Remember that - * - = +

12 - 8 = 6x - 3x + 4x

Leave the x on one side, remember that when it is positive on one side, it changes sign when you pass them to the other side.

4 = 7x

x = 4/7 Pass the 7 dividing

2006-06-24 18:29:06 · answer #2 · answered by Rocio 2 · 0 0

3x-4x+12=6x+8
-x+12=6x+8
4=7x
x=4/7

2006-06-25 23:16:06 · answer #3 · answered by CSUFGrad2006 5 · 0 0

3x - 4(x - 3) = 2(3x + 4)
3x - 4x + 12 = 6x + 8
-x + 12 = 6x + 8
-7x = -4
x = (4/7)

2006-06-24 20:36:18 · answer #4 · answered by Sherman81 6 · 0 0

3x-4(x-3)= 2(3x+4)
3x-4x+12=6x+8
12-8=6x+4x-3x
4= 10x-3x
4=7x
x=4/7

2006-06-24 17:52:28 · answer #5 · answered by flori 4 · 0 0

the answer is x= 4/7

3x-4(x-3) = 2(3x-4)
3x-4x+12 = 6x + 8
-8+12 = 6x - 3x - 4x
4 = 7x
4/7 = x

2006-06-24 18:01:39 · answer #6 · answered by *Arturo* 1 · 0 0

3x - 4(x-3) = 2(3x + 4)
simpliffy the brackets;
--> 3x - 4x + 12 = 6x + 8
--> -x + 12 = 6x + 8
subtract both sides by 12
--> -x +12 - 12 = 6x + 8 - 12
--> -x = 6x -4
subtract both sides by 6x
--> -x - 6x = 6x -4 -6x
--> -7x = -4
divide both sides -7
--> -7x/-7 = -4/-7
--> x= 4/7
therefore x = 4/7 or 0.571

2006-06-24 19:57:03 · answer #7 · answered by bz_co0l@rogers.com 3 · 0 0

Ok, so first, multiply out the parathesis on both sides. you get
3x-4x+12=6x+8
then combine like terms, in other words, move the x's to one side and the numbers to the other.
3x-4x-6x=8-12, which simplifies to
-7x = -4, now divide both sides by -7, and you get
x = 4/7

2006-06-24 17:53:13 · answer #8 · answered by belleswan 3 · 0 0

3x - (4x - 12) = 6x + 8
-1X + 12 = 6x + 8
-1x +4 = 6x

4 = 7x
4/7 = x

??

2006-06-24 17:48:14 · answer #9 · answered by KB 6 · 0 0

4/7.....that was tough

2006-06-24 18:30:26 · answer #10 · answered by xShakenChicx 1 · 0 0

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