7(5b+3)=-84

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Solution for 7(5b+3)=-84 equation: 



7(5b+3)=-84

We move all terms to the left:

7(5b+3)-(-84)=0

We add all the numbers together, and all the variables

7(5b+3)+84=0

We multiply parentheses

35b+21+84=0

We add all the numbers together, and all the variables

35b+105=0

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

35b=-105

b=-105/35

b=-3

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