3x-12+3x=2x+4-5x-25

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Solution for 3x-12+3x=2x+4-5x-25 equation: 



3x-12+3x=2x+4-5x-25

We move all terms to the left:

3x-12+3x-(2x+4-5x-25)=0

We add all the numbers together, and all the variables

3x+3x-(-3x-21)-12=0

We add all the numbers together, and all the variables

6x-(-3x-21)-12=0

We get rid of parentheses

6x+3x+21-12=0

We add all the numbers together, and all the variables

9x+9=0

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

9x=-9

x=-9/9

x=-1

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