-10b+21+3b=-19

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Solution for -10b+21+3b=-19 equation: 



-10b+21+3b=-19

We move all terms to the left:

-10b+21+3b-(-19)=0

We add all the numbers together, and all the variables

-7b+40=0

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

-7b=-40

b=-40/-7

b=5+5/7

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