8x-15-x=4x+12

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Solution for 8x-15-x=4x+12 equation: 



8x-15-x=4x+12

We move all terms to the left:

8x-15-x-(4x+12)=0

We add all the numbers together, and all the variables

7x-(4x+12)-15=0

We get rid of parentheses

7x-4x-12-15=0

We add all the numbers together, and all the variables

3x-27=0

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

3x=27

x=27/3

x=9

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