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129(x)=5.5x-220
We move all terms to the left:
129(x)-(5.5x-220)=0
We get rid of parentheses
129x-5.5x+220=0
We add all the numbers together, and all the variables
123.5x+220=0
We move all terms containing x to the left, all other terms to the right
123.5x=-220
x=-220/123.5
x=-1+27.571428571429/35.285714285714
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