15+2b-9+1.5(b+2)=90-b

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Solution for 15+2b-9+1.5(b+2)=90-b equation: 



15+2b-9+1.5(b+2)=90-b

We move all terms to the left:

15+2b-9+1.5(b+2)-(90-b)=0

We add all the numbers together, and all the variables

2b+1.5(b+2)-(-1b+90)+15-9=0

We add all the numbers together, and all the variables

2b+1.5(b+2)-(-1b+90)+6=0

We multiply parentheses

2b+1.5b-(-1b+90)+3+6=0

We get rid of parentheses

2b+1.5b+1b-90+3+6=0

We add all the numbers together, and all the variables

4.5b-81=0

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

4.5b=81

b=81/4.5

b=18

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