7(b-2)-5(b+1)=-13

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Solution for 7(b-2)-5(b+1)=-13 equation: 



7(b-2)-5(b+1)=-13

We move all terms to the left:

7(b-2)-5(b+1)-(-13)=0

We add all the numbers together, and all the variables

7(b-2)-5(b+1)+13=0

We multiply parentheses

7b-5b-14-5+13=0

We add all the numbers together, and all the variables

2b-6=0

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

2b=6

b=6/2

b=3

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