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2x+0.5=40
We move all terms to the left:
2x+0.5-(40)=0
We add all the numbers together, and all the variables
2x-39.5=0
We move all terms containing x to the left, all other terms to the right
2x=39.5
x=39.5/2
x=19+1/1.3333333333333
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