8b-(-7b)=105

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Solution for 8b-(-7b)=105 equation: 



8b-(-7b)=105

We move all terms to the left:

8b-(-7b)-(105)=0

We get rid of parentheses

8b+7b-105=0

We add all the numbers together, and all the variables

15b-105=0

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

15b=105

b=105/15

b=7

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