15x-9=12x+9

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Solution for 15x-9=12x+9 equation: 



15x-9=12x+9

We move all terms to the left:

15x-9-(12x+9)=0

We get rid of parentheses

15x-12x-9-9=0

We add all the numbers together, and all the variables

3x-18=0

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

3x=18

x=18/3

x=6

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