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12x-1=2(6+5)+7
We move all terms to the left:
12x-1-(2(6+5)+7)=0
We add all the numbers together, and all the variables
12x-1-(211+7)=0
We add all the numbers together, and all the variables
12x-219=0
We move all terms containing x to the left, all other terms to the right
12x=219
x=219/12
x=18+1/4
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