-3-(-2b-5)=20

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Solution for -3-(-2b-5)=20 equation: 



-3-(-2b-5)=20

We move all terms to the left:

-3-(-2b-5)-(20)=0

We add all the numbers together, and all the variables

-(-2b-5)-23=0

We get rid of parentheses

2b+5-23=0

We add all the numbers together, and all the variables

2b-18=0

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

2b=18

b=18/2

b=9

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