6a-21=3(2a+6)

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Solution for 6a-21=3(2a+6) equation: 



6a-21=3(2a+6)

We move all terms to the left:

6a-21-(3(2a+6))=0



We calculate terms in parentheses: -(3(2a+6)), so:

3(2a+6)

We multiply parentheses

6a+18

Back to the equation:

-(6a+18)



We get rid of parentheses

6a-6a-18-21=0

We add all the numbers together, and all the variables

-39!=0

There is no solution for this equation

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