(2b-20)+b=70

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Solution for (2b-20)+b=70 equation: 



(2b-20)+b=70

We move all terms to the left:

(2b-20)+b-(70)=0

We add all the numbers together, and all the variables

b+(2b-20)-70=0

We get rid of parentheses

b+2b-20-70=0

We add all the numbers together, and all the variables

3b-90=0

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

3b=90

b=90/3

b=30

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