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x/5+x/8=15-x/20

We move all terms to the left:

x/5+x/8-(15-x/20)=0

We add all the numbers together, and all the variables

x/5+x/8-(-x/20+15)=0

We get rid of parentheses

x/5+x/8+x/20-15=0

We calculate fractions

There is no solution for this equation

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