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3.8x-21=3
We move all terms to the left:
3.8x-21-(3)=0
We add all the numbers together, and all the variables
3.8x-24=0
We move all terms containing x to the left, all other terms to the right
3.8x=24
x=24/3.8
x=6+1/3.1666666666667
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