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80=1.8x-80
We move all terms to the left:
80-(1.8x-80)=0
We get rid of parentheses
-1.8x+80+80=0
We add all the numbers together, and all the variables
-1.8x+160=0
We move all terms containing x to the left, all other terms to the right
-1.8x=-160
x=-160/-1.8
x=88+1/1.125
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