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7x+6x=2+12
We move all terms to the left:
7x+6x-(2+12)=0
We add all the numbers together, and all the variables
7x+6x-14=0
We add all the numbers together, and all the variables
13x-14=0
We move all terms containing x to the left, all other terms to the right
13x=14
x=14/13
x=1+1/13
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