3-12=7x+4

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Solution for 3-12=7x+4 equation: 



3-12=7x+4

We move all terms to the left:

3-12-(7x+4)=0

We add all the numbers together, and all the variables

-(7x+4)-9=0

We get rid of parentheses

-7x-4-9=0

We add all the numbers together, and all the variables

-7x-13=0

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

-7x=13

x=13/-7

x=-1+6/7

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