-3+7=2b+42

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Solution for -3+7=2b+42 equation: 



-3+7=2b+42

We move all terms to the left:

-3+7-(2b+42)=0

We add all the numbers together, and all the variables

-(2b+42)+4=0

We get rid of parentheses

-2b-42+4=0

We add all the numbers together, and all the variables

-2b-38=0

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

-2b=38

b=38/-2

b=-19

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