3(a-7)=3(2a-1)

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Solution for 3(a-7)=3(2a-1) equation: 



3(a-7)=3(2a-1)

We move all terms to the left:

3(a-7)-(3(2a-1))=0

We multiply parentheses

3a-(3(2a-1))-21=0



We calculate terms in parentheses: -(3(2a-1)), so:

3(2a-1)

We multiply parentheses

6a-3

Back to the equation:

-(6a-3)



We get rid of parentheses

3a-6a+3-21=0

We add all the numbers together, and all the variables

-3a-18=0

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

-3a=18

a=18/-3

a=-6

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