-140=-7(b+10)

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Solution for -140=-7(b+10) equation: 



-140=-7(b+10)

We move all terms to the left:

-140-(-7(b+10))=0



We calculate terms in parentheses: -(-7(b+10)), so:

-7(b+10)

We multiply parentheses

-7b-70

Back to the equation:

-(-7b-70)



We get rid of parentheses

7b+70-140=0

We add all the numbers together, and all the variables

7b-70=0

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

7b=70

b=70/7

b=10

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