-7(-b-3)=10b+3

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Solution for -7(-b-3)=10b+3 equation: 



-7(-b-3)=10b+3

We move all terms to the left:

-7(-b-3)-(10b+3)=0

We add all the numbers together, and all the variables

-7(-1b-3)-(10b+3)=0

We multiply parentheses

7b-(10b+3)+21=0

We get rid of parentheses

7b-10b-3+21=0

We add all the numbers together, and all the variables

-3b+18=0

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

-3b=-18

b=-18/-3

b=+6

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