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x+20x/100=500
We move all terms to the left:
x+20x/100-(500)=0
We multiply all the terms by the denominator
x*100+20x-500*100=0
We add all the numbers together, and all the variables
20x+x*100-50000=0
Wy multiply elements
20x+100x-50000=0
We add all the numbers together, and all the variables
120x-50000=0
We move all terms containing x to the left, all other terms to the right
120x=50000
x=50000/120
x=416+2/3
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