7=8(4)+b

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Solution for 7=8(4)+b equation: 



7=8(4)+b

We move all terms to the left:

7-(8(4)+b)=0

We add all the numbers together, and all the variables

-(b+84)+7=0

We get rid of parentheses

-b-84+7=0

We add all the numbers together, and all the variables

-1b-77=0

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

-b=77

b=77/-1

b=-77

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