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1.5x+40-51=378.55
We move all terms to the left:
1.5x+40-51-(378.55)=0
We add all the numbers together, and all the variables
1.5x-389.55=0
We move all terms containing x to the left, all other terms to the right
1.5x=389.55
x=389.55/1.5
x=259+1/1.4285714285714
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