10x-12=9+7x

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Solution for 10x-12=9+7x equation: 



10x-12=9+7x

We move all terms to the left:

10x-12-(9+7x)=0

We add all the numbers together, and all the variables

10x-(7x+9)-12=0

We get rid of parentheses

10x-7x-9-12=0

We add all the numbers together, and all the variables

3x-21=0

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

3x=21

x=21/3

x=7

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