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(x+2)/15=(2x-4)/20
We move all terms to the left:
(x+2)/15-((2x-4)/20)=0
We calculate fractions
x/()+(-((2x-4)*15)/()=0
We calculate terms in parentheses: +(-((2x-4)*15)/(), so:We get rid of parentheses
-((2x-4)*15)/(
We multiply all the terms by the denominator
-((2x-4)*15)
We calculate terms in parentheses: -((2x-4)*15), so:We get rid of parentheses
(2x-4)*15
We multiply parentheses
30x-60
Back to the equation:
-(30x-60)
-30x+60
Back to the equation:
+(-30x+60)
x/()-30x+60=0
We multiply all the terms by the denominator
x-30x*()+60*()=0
We add all the numbers together, and all the variables
x-30x*()=0
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