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474.98=220+1.22x
We move all terms to the left:
474.98-(220+1.22x)=0
We add all the numbers together, and all the variables
-(1.22x+220)+474.98=0
We get rid of parentheses
-1.22x-220+474.98=0
We add all the numbers together, and all the variables
-1.22x+254.98=0
We move all terms containing x to the left, all other terms to the right
-1.22x=-254.98
x=-254.98/-1.22
x=+209
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