(x/5)+(3x/10)=21

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Solution for (x/5)+(3x/10)=21 equation: 



(x/5)+(3x/10)=21

We move all terms to the left:

(x/5)+(3x/10)-(21)=0

We add all the numbers together, and all the variables

(+x/5)+(+3x/10)-21=0

We get rid of parentheses

x/5+3x/10-21=0

We calculate fractions

There is no solution for this equation

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