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12a/3=4a
We move all terms to the left:
12a/3-(4a)=0
We add all the numbers together, and all the variables
-4a+12a/3=0
We multiply all the terms by the denominator
-4a*3+12a=0
We add all the numbers together, and all the variables
12a-4a*3=0
Wy multiply elements
12a-12a=0
We add all the numbers together, and all the variables
=0
a=0/1
a=0
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