a/7+21=9

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Solution for a/7+21=9 equation: 



a/7+21=9

We move all terms to the left:

a/7+21-(9)=0

We add all the numbers together, and all the variables

a/7+12=0

We multiply all the terms by the denominator


a+12*7=0

We add all the numbers together, and all the variables

a+84=0

We move all terms containing a to the left, all other terms to the right

a=-84

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