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4x+12x=20+2
We move all terms to the left:
4x+12x-(20+2)=0
We add all the numbers together, and all the variables
4x+12x-22=0
We add all the numbers together, and all the variables
16x-22=0
We move all terms containing x to the left, all other terms to the right
16x=22
x=22/16
x=1+3/8
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