12=3(x+8)-7x

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Solution for 12=3(x+8)-7x equation: 



12=3(x+8)-7x

We move all terms to the left:

12-(3(x+8)-7x)=0



We calculate terms in parentheses: -(3(x+8)-7x), so:

3(x+8)-7x

We add all the numbers together, and all the variables

-7x+3(x+8)

We multiply parentheses

-7x+3x+24

We add all the numbers together, and all the variables

-4x+24

Back to the equation:

-(-4x+24)



We get rid of parentheses

4x-24+12=0

We add all the numbers together, and all the variables

4x-12=0

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

4x=12

x=12/4

x=3

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