4(a+9)=12

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Solution for 4(a+9)=12 equation: 



4(a+9)=12

We move all terms to the left:

4(a+9)-(12)=0

We multiply parentheses

4a+36-12=0

We add all the numbers together, and all the variables

4a+24=0

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

4a=-24

a=-24/4

a=-6

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