7(a+3)=5(a-3)

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Solution for 7(a+3)=5(a-3) equation: 



7(a+3)=5(a-3)

We move all terms to the left:

7(a+3)-(5(a-3))=0

We multiply parentheses

7a-(5(a-3))+21=0



We calculate terms in parentheses: -(5(a-3)), so:

5(a-3)

We multiply parentheses

5a-15

Back to the equation:

-(5a-15)



We get rid of parentheses

7a-5a+15+21=0

We add all the numbers together, and all the variables

2a+36=0

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

2a=-36

a=-36/2

a=-18

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