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11+21x=6+14x+5+7x
We move all terms to the left:
11+21x-(6+14x+5+7x)=0
We add all the numbers together, and all the variables
21x-(21x+11)+11=0
We get rid of parentheses
21x-21x-11+11=0
We add all the numbers together, and all the variables
=0
x=0/1
x=0
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