3(-4b-7)=3-8b

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Solution for 3(-4b-7)=3-8b equation: 



3(-4b-7)=3-8b

We move all terms to the left:

3(-4b-7)-(3-8b)=0

We add all the numbers together, and all the variables

3(-4b-7)-(-8b+3)=0

We multiply parentheses

-12b-(-8b+3)-21=0

We get rid of parentheses

-12b+8b-3-21=0

We add all the numbers together, and all the variables

-4b-24=0

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

-4b=24

b=24/-4

b=-6

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