4(a+12)=28

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Solution for 4(a+12)=28 equation: 



4(a+12)=28

We move all terms to the left:

4(a+12)-(28)=0

We multiply parentheses

4a+48-28=0

We add all the numbers together, and all the variables

4a+20=0

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

4a=-20

a=-20/4

a=-5

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