6-5(b-6)=21

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Solution for 6-5(b-6)=21 equation: 



6-5(b-6)=21

We move all terms to the left:

6-5(b-6)-(21)=0

We add all the numbers together, and all the variables

-5(b-6)-15=0

We multiply parentheses

-5b+30-15=0

We add all the numbers together, and all the variables

-5b+15=0

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

-5b=-15

b=-15/-5

b=+3

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