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540=b+(b+45)+90+(2b-90)+1.5b
We move all terms to the left:
540-(b+(b+45)+90+(2b-90)+1.5b)=0
We calculate terms in parentheses: -(b+(b+45)+90+(2b-90)+1.5b), so:We get rid of parentheses
b+(b+45)+90+(2b-90)+1.5b
determiningTheFunctionDomain b+(b+45)+(2b-90)+1.5b+90
We add all the numbers together, and all the variables
2.5b+(b+45)+(2b-90)+90
We get rid of parentheses
2.5b+b+2b+45-90+90
We add all the numbers together, and all the variables
5.5b+45
Back to the equation:
-(5.5b+45)
-5.5b-45+540=0
We add all the numbers together, and all the variables
-5.5b+495=0
We move all terms containing b to the left, all other terms to the right
-5.5b=-495
b=-495/-5.5
b=+90
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