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(21/30)=(x/100)
We move all terms to the left:
(21/30)-((x/100))=0
We add all the numbers together, and all the variables
-((+x/100))+(+21/30)=0
We get rid of parentheses
-((+x/100))+21/30=0
We calculate fractions
(-((+x*30)/()+()/()=0
We calculate terms in parentheses: +(-((+x*30)/()+()/(), so:
-((+x*30)/()+()/(
We can not solve this equation
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