7x-7-12=3x+9

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Solution for 7x-7-12=3x+9 equation: 



7x-7-12=3x+9

We move all terms to the left:

7x-7-12-(3x+9)=0

We add all the numbers together, and all the variables

7x-(3x+9)-19=0

We get rid of parentheses

7x-3x-9-19=0

We add all the numbers together, and all the variables

4x-28=0

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

4x=28

x=28/4

x=7

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