a/3+(-21)=7

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Solution for a/3+(-21)=7 equation: 



a/3+(-21)=7

We move all terms to the left:

a/3+(-21)-(7)=0

determiningTheFunctionDomain
a/3-7+(-21)=0

We add all the numbers together, and all the variables

a/3-28=0

We multiply all the terms by the denominator


a-28*3=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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