7(b-89)=-21

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Solution for 7(b-89)=-21 equation: 



7(b-89)=-21

We move all terms to the left:

7(b-89)-(-21)=0

We add all the numbers together, and all the variables

7(b-89)+21=0

We multiply parentheses

7b-623+21=0

We add all the numbers together, and all the variables

7b-602=0

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

7b=602

b=602/7

b=86

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