3(3+4a)=45

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Solution for 3(3+4a)=45 equation: 



3(3+4a)=45

We move all terms to the left:

3(3+4a)-(45)=0

We add all the numbers together, and all the variables

3(4a+3)-45=0

We multiply parentheses

12a+9-45=0

We add all the numbers together, and all the variables

12a-36=0

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

12a=36

a=36/12

a=3

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