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3.3x+1.4=21.2
We move all terms to the left:
3.3x+1.4-(21.2)=0
We add all the numbers together, and all the variables
3.3x-19.8=0
We move all terms containing x to the left, all other terms to the right
3.3x=19.8
x=19.8/3.3
x=6+3.5527136788005E-15/3.3
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