15x-12=3x+9+5x

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Solution for 15x-12=3x+9+5x equation: 



15x-12=3x+9+5x

We move all terms to the left:

15x-12-(3x+9+5x)=0

We add all the numbers together, and all the variables

15x-(8x+9)-12=0

We get rid of parentheses

15x-8x-9-12=0

We add all the numbers together, and all the variables

7x-21=0

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

7x=21

x=21/7

x=3

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