-4(b+-40)=72

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Solution for -4(b+-40)=72 equation: 



-4(b+-40)=72

We move all terms to the left:

-4(b+-40)-(72)=0

We add all the numbers together, and all the variables

-4(b-40)-72=0

We multiply parentheses

-4b+160-72=0

We add all the numbers together, and all the variables

-4b+88=0

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

-4b=-88

b=-88/-4

b=+22

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