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2.5b+(2b-90)+90+(b+45)=360
We move all terms to the left:
2.5b+(2b-90)+90+(b+45)-(360)=0
We add all the numbers together, and all the variables
2.5b+(2b-90)+(b+45)-270=0
We get rid of parentheses
2.5b+2b+b-90+45-270=0
We add all the numbers together, and all the variables
5.5b-315=0
We move all terms containing b to the left, all other terms to the right
5.5b=315
b=315/5.5
b=57+1/3.66666666667
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