1.5b+(b+45)+(2b-90)=90=540

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Solution for 1.5b+(b+45)+(2b-90)=90=540 equation: 



1.5b+(b+45)+(2b-90)=90=540

We move all terms to the left:

1.5b+(b+45)+(2b-90)-(90)=0

We get rid of parentheses

1.5b+b+2b+45-90-90=0

We add all the numbers together, and all the variables

4.5b-135=0

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

4.5b=135

b=135/4.5

b=30

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