4a+20=12

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Solution for 4a+20=12 equation: 



4a+20=12

We move all terms to the left:

4a+20-(12)=0

We add all the numbers together, and all the variables

4a+8=0

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

4a=-8

a=-8/4

a=-2

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