-2(7b-3)=90

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Solution for -2(7b-3)=90 equation: 



-2(7b-3)=90

We move all terms to the left:

-2(7b-3)-(90)=0

We multiply parentheses

-14b+6-90=0

We add all the numbers together, and all the variables

-14b-84=0

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

-14b=84

b=84/-14

b=-6

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