5(1-4b)=-21-7b

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Solution for 5(1-4b)=-21-7b equation: 



5(1-4b)=-21-7b

We move all terms to the left:

5(1-4b)-(-21-7b)=0

We add all the numbers together, and all the variables

5(-4b+1)-(-7b-21)=0

We multiply parentheses

-20b-(-7b-21)+5=0

We get rid of parentheses

-20b+7b+21+5=0

We add all the numbers together, and all the variables

-13b+26=0

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

-13b=-26

b=-26/-13

b=+2

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