3x-4=-5x-12

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Solution for 3x-4=-5x-12 equation: 



3x-4=-5x-12

We move all terms to the left:

3x-4-(-5x-12)=0

We get rid of parentheses

3x+5x+12-4=0

We add all the numbers together, and all the variables

8x+8=0

We move all terms containing x to the left, all other terms to the right

8x=-8

x=-8/8

x=-1

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