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9.38x+2.21=3
We move all terms to the left:
9.38x+2.21-(3)=0
We add all the numbers together, and all the variables
9.38x-0.79=0
We move all terms containing x to the left, all other terms to the right
9.38x=0.79
x=0.79/9.38
x=0.79/9.38
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