a(7-a)=12

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Solution for a(7-a)=12 equation:



(7-A)=12
We move all terms to the left:
(7-A)-(12)=0
We add all the numbers together, and all the variables
(-1A+7)-12=0
We get rid of parentheses
-1A+7-12=0
We add all the numbers together, and all the variables
-1A-5=0
We move all terms containing A to the left, all other terms to the right
-A=5
A=5/-1
A=-5

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