3*a/3=7

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Solution for 3*a/3=7 equation: 



3a/3=7

We move all terms to the left:

3a/3-(7)=0

We multiply all the terms by the denominator


3a-7*3=0

We add all the numbers together, and all the variables

3a-21=0

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

3a=21

a=21/3

a=7

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