7/a=21/15

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Solution for 7/a=21/15 equation: 



7/a=21/15

We move all terms to the left:

7/a-(21/15)=0



Domain of the equation: a!=0

a∈R



We add all the numbers together, and all the variables

7/a-(+21/15)=0

We get rid of parentheses

7/a-21/15=0

We calculate fractions

There is no solution for this equation

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