15x-7=20+12x

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Solution for 15x-7=20+12x equation: 



15x-7=20+12x

We move all terms to the left:

15x-7-(20+12x)=0

We add all the numbers together, and all the variables

15x-(12x+20)-7=0

We get rid of parentheses

15x-12x-20-7=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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