3(5a-1)=12

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Solution for 3(5a-1)=12 equation: 



3(5a-1)=12

We move all terms to the left:

3(5a-1)-(12)=0

We multiply parentheses

15a-3-12=0

We add all the numbers together, and all the variables

15a-15=0

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

15a=15

a=15/15

a=1

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