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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-21a-(7(a+1))+7=0



We calculate terms in parentheses: -(7(a+1)), so:

7(a+1)

We multiply parentheses

7a+7

Back to the equation:

-(7a+7)



We get rid of parentheses

-21a-7a-7+7=0

We add all the numbers together, and all the variables

-28a=0

a=0/-28

a=0

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