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show work please so i can compare.

2007-10-01 12:32:00 · 4 answers · asked by Anonymous in Science & Mathematics Mathematics

4 answers

-4(3x - 2) = -4, first distribute the -4 and clear ()
-12x + 8 = -4, now add -8 to both sides
-12x = -12, divide both sides by -12
x = 1
This checks!

2007-10-01 12:41:06 · answer #1 · answered by Marley K 7 · 0 0

That's soooo easy! I wish I was still doing that kind of math!

1) -4(3x-2)= -4 (The problem)

2) -12x+8= -4 (You distribute the -4 to both 3x and -2 because they're in the parentheses. This is called Distributive Property. Here's a more written way of seeing it:
3x(4)-2(3)= -4)

3) -12x+8 (-8)= -4 (-8) (Subtract eight from both sides to get 12x by itself.)

4) -12x= -12 (You should get this when you subtract eight)

5) -12x (/-12)= -12 (/-12) (Divide both sides by -12 to get x by itself.)

6) x= 1 (Since the negatives cancel each other out you should get positive one as your answer.)

Hope I helped!

2007-10-01 12:51:09 · answer #2 · answered by Anonymous · 1 0

Before I do this and show you how, Don't any of ya'll ever pay attention in class?

- 4( 3x - 2) = -4
multiply to clear parenthesis first:

memorize these.:

positive times a positive equals to a positive
negative times a negative equals to a positive
negative times a positive equals to a negative.

positive divided by a positive equals to a positive
negative divided by a negative equals to a positive
a negative divided by a positive equals to a negative
a positve divided by a negative equals to a negative

When working with signed numbers there is no subtraction: There is only addition: and additive inverse instead of subtraction:

positive plus a positive is a positive
negative plus a negative is a negative
negative plus a positive. find difference and use sign of largest number:


- 12x + 8 = - 4
now take the additive inverse of 8 on both sides of the equation.

- 12x +8 - 8 = - 4 -8
- 12x = - 12
divide both sides by - 12

- 12x / -12 = -12 / -12

x = 1
now plug it in and check your answer:

-4 ( 3*1 - 2) = -4
- 12 + 8 = -4
-4 = - 4

2007-10-01 12:52:15 · answer #3 · answered by JUAN FRAN$$$ 7 · 0 1

-4(3x-2) = 4
[-4(3x-2)] /-4 = 4/-4
3x - 2 = -1
3x - 2 + 2 = -1 + 2
3x = 1
3x/3 = 1/3
x = 1/3

2007-10-01 12:39:41 · answer #4 · answered by Cassy1122 4 · 0 1

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