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12x=3*12x
We move all terms to the left:
12x-(3*12x)=0
We add all the numbers together, and all the variables
12x-(+3*12x)=0
We get rid of parentheses
12x-3*12x=0
Wy multiply elements
12x-36x=0
We add all the numbers together, and all the variables
-24x=0
x=0/-24
x=0
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