7-12(3+b)=13

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Solution for 7-12(3+b)=13 equation: 



7-12(3+b)=13

We move all terms to the left:

7-12(3+b)-(13)=0

We add all the numbers together, and all the variables

-12(b+3)+7-13=0

We add all the numbers together, and all the variables

-12(b+3)-6=0

We multiply parentheses

-12b-36-6=0

We add all the numbers together, and all the variables

-12b-42=0

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

-12b=42

b=42/-12

b=-3+1/2

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