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x-15=20x/100
We move all terms to the left:
x-15-(20x/100)=0
We add all the numbers together, and all the variables
x-(+20x/100)-15=0
We get rid of parentheses
x-20x/100-15=0
We multiply all the terms by the denominator
x*100-20x-15*100=0
We add all the numbers together, and all the variables
-20x+x*100-1500=0
Wy multiply elements
-20x+100x-1500=0
We add all the numbers together, and all the variables
80x-1500=0
We move all terms containing x to the left, all other terms to the right
80x=1500
x=1500/80
x=18+3/4
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