210=5(7-7b)

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Solution for 210=5(7-7b) equation: 



210=5(7-7b)

We move all terms to the left:

210-(5(7-7b))=0

We add all the numbers together, and all the variables

-(5(-7b+7))+210=0



We calculate terms in parentheses: -(5(-7b+7)), so:

5(-7b+7)

We multiply parentheses

-35b+35

Back to the equation:

-(-35b+35)



We get rid of parentheses

35b-35+210=0

We add all the numbers together, and all the variables

35b+175=0

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

35b=-175

b=-175/35

b=-5

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