5(a+9)-(3a+12)=5+3a

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Solution for 5(a+9)-(3a+12)=5+3a equation: 



5(a+9)-(3a+12)=5+3a

We move all terms to the left:

5(a+9)-(3a+12)-(5+3a)=0

We add all the numbers together, and all the variables

5(a+9)-(3a+12)-(3a+5)=0

We multiply parentheses

5a-(3a+12)-(3a+5)+45=0

We get rid of parentheses

5a-3a-3a-12-5+45=0

We add all the numbers together, and all the variables

-1a+28=0

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

-a=-28

a=-28/-1

a=+28

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