12+3x=4(-x+7)-37

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Solution for 12+3x=4(-x+7)-37 equation: 



12+3x=4(-x+7)-37

We move all terms to the left:

12+3x-(4(-x+7)-37)=0

We add all the numbers together, and all the variables

3x-(4(-1x+7)-37)+12=0



We calculate terms in parentheses: -(4(-1x+7)-37), so:

4(-1x+7)-37

We multiply parentheses

-4x+28-37

We add all the numbers together, and all the variables

-4x-9

Back to the equation:

-(-4x-9)



We get rid of parentheses

3x+4x+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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