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0.8x+2.4=40
We move all terms to the left:
0.8x+2.4-(40)=0
We add all the numbers together, and all the variables
0.8x-37.6=0
We move all terms containing x to the left, all other terms to the right
0.8x=37.6
x=37.6/0.8
x=47
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