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x=4x-66.6
We move all terms to the left:
x-(4x-66.6)=0
We get rid of parentheses
x-4x+66.6=0
We add all the numbers together, and all the variables
-3x+66.6=0
We move all terms containing x to the left, all other terms to the right
-3x=-66.6
x=-66.6/-3
x=22+0.59999999999999/3
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