7(3a-9)=-7(4a+2)

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Solution for 7(3a-9)=-7(4a+2) equation: 



7(3a-9)=-7(4a+2)

We move all terms to the left:

7(3a-9)-(-7(4a+2))=0

We multiply parentheses

21a-(-7(4a+2))-63=0



We calculate terms in parentheses: -(-7(4a+2)), so:

-7(4a+2)

We multiply parentheses

-28a-14

Back to the equation:

-(-28a-14)



We get rid of parentheses

21a+28a+14-63=0

We add all the numbers together, and all the variables

49a-49=0

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

49a=49

a=49/49

a=1

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