5(a-3)=15

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Solution for 5(a-3)=15 equation: 



5(a-3)=15

We move all terms to the left:

5(a-3)-(15)=0

We multiply parentheses

5a-15-15=0

We add all the numbers together, and all the variables

5a-30=0

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

5a=30

a=30/5

a=6

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