((3*5)+2b)=45

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Solution for ((3*5)+2b)=45 equation: 



((3*5)+2b)=45

We move all terms to the left:

((3*5)+2b)-(45)=0

We add all the numbers together, and all the variables

(15+2b)-45=0

We get rid of parentheses

2b+15-45=0

We add all the numbers together, and all the variables

2b-30=0

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

2b=30

b=30/2

b=15

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