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0.5=(x-180)/x
We move all terms to the left:
0.5-((x-180)/x)=0
Domain of the equation: x)!=0We multiply all the terms by the denominator
x!=0/1
x!=0
x∈R
-((x-180)+(0.5)*x)=0
We calculate terms in parentheses: -((x-180)+(0.5)*x), so:We get rid of parentheses
(x-180)+(0.5)*x
We multiply parentheses
(x-180)+0.5x
We get rid of parentheses
x+0.5x-180
We add all the numbers together, and all the variables
1.5x-180
Back to the equation:
-(1.5x-180)
-1.5x+180=0
We move all terms containing x to the left, all other terms to the right
-1.5x=-180
x=-180/-1.5
x=+120
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