7a=3(a+4)

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



7a=3(a+4)

We move all terms to the left:

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



We calculate terms in parentheses: -(3(a+4)), so:

3(a+4)

We multiply parentheses

3a+12

Back to the equation:

-(3a+12)



We get rid of parentheses

7a-3a-12=0

We add all the numbers together, and all the variables

4a-12=0

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

4a=12

a=12/4

a=3

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