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x+4x+x+12+x/2=220
We move all terms to the left:
x+4x+x+12+x/2-(220)=0
We add all the numbers together, and all the variables
6x+x/2-208=0
We multiply all the terms by the denominator
6x*2+x-208*2=0
We add all the numbers together, and all the variables
x+6x*2-416=0
Wy multiply elements
x+12x-416=0
We add all the numbers together, and all the variables
13x-416=0
We move all terms containing x to the left, all other terms to the right
13x=416
x=416/13
x=32
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