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213=13x+14
We move all terms to the left:
213-(13x+14)=0
We get rid of parentheses
-13x-14+213=0
We add all the numbers together, and all the variables
-13x+199=0
We move all terms containing x to the left, all other terms to the right
-13x=-199
x=-199/-13
x=15+4/13
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