3(4-5a)=12+a

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Solution for 3(4-5a)=12+a equation: 



3(4-5a)=12+a

We move all terms to the left:

3(4-5a)-(12+a)=0

We add all the numbers together, and all the variables

3(-5a+4)-(a+12)=0

We multiply parentheses

-15a-(a+12)+12=0

We get rid of parentheses

-15a-a-12+12=0

We add all the numbers together, and all the variables

-16a=0

a=0/-16

a=0

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