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330+12.38x-495.2=422.85
We move all terms to the left:
330+12.38x-495.2-(422.85)=0
We add all the numbers together, and all the variables
12.38x-588.05=0
We move all terms containing x to the left, all other terms to the right
12.38x=588.05
x=588.05/12.38
x=47+1/2
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