7+5(-b+8)=87

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Solution for 7+5(-b+8)=87 equation: 



7+5(-b+8)=87

We move all terms to the left:

7+5(-b+8)-(87)=0

We add all the numbers together, and all the variables

5(-1b+8)+7-87=0

We add all the numbers together, and all the variables

5(-1b+8)-80=0

We multiply parentheses

-5b+40-80=0

We add all the numbers together, and all the variables

-5b-40=0

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

-5b=40

b=40/-5

b=-8

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