-4(b-10)=-20

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Solution for -4(b-10)=-20 equation: 



-4(b-10)=-20

We move all terms to the left:

-4(b-10)-(-20)=0

We add all the numbers together, and all the variables

-4(b-10)+20=0

We multiply parentheses

-4b+40+20=0

We add all the numbers together, and all the variables

-4b+60=0

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

-4b=-60

b=-60/-4

b=+15

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