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8.25x+12.38x+40=385.71
We move all terms to the left:
8.25x+12.38x+40-(385.71)=0
We add all the numbers together, and all the variables
20.63x-345.71=0
We move all terms containing x to the left, all other terms to the right
20.63x=345.71
x=345.71/20.63
x=16+2.77619893428/3.66429840142
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