7-12(3+b)7=31

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Solution for 7-12(3+b)7=31 equation: 



7-12(3+b)7=31

We move all terms to the left:

7-12(3+b)7-(31)=0

We add all the numbers together, and all the variables

-12(b+3)7+7-31=0

We add all the numbers together, and all the variables

-12(b+3)7-24=0

We multiply parentheses

-84b-252-24=0

We add all the numbers together, and all the variables

-84b-276=0

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

-84b=276

b=276/-84

b=-3+2/7

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