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14x/7=21
We move all terms to the left:
14x/7-(21)=0
We multiply all the terms by the denominator
14x-21*7=0
We add all the numbers together, and all the variables
14x-147=0
We move all terms containing x to the left, all other terms to the right
14x=147
x=147/14
x=10+1/2
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