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3/2b(b+45)+(2b-90)=90
We move all terms to the left:
3/2b(b+45)+(2b-90)-(90)=0
Domain of the equation: 2b(b+45)!=0We get rid of parentheses
b∈R
3/2b(b+45)+2b-90-90=0
We multiply all the terms by the denominator
2b*2b(b+45)-90*2b(b+45)-90*2b(b+45)+3=0
Wy multiply elements
4b^2(b-180b(b-180b(b+3=0
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