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33+12x=129+16
We move all terms to the left:
33+12x-(129+16)=0
We add all the numbers together, and all the variables
12x+33-145=0
We add all the numbers together, and all the variables
12x-112=0
We move all terms containing x to the left, all other terms to the right
12x=112
x=112/12
x=9+1/3
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