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5.4x-2.3=40.9
We move all terms to the left:
5.4x-2.3-(40.9)=0
We add all the numbers together, and all the variables
5.4x-43.2=0
We move all terms containing x to the left, all other terms to the right
5.4x=43.2
x=43.2/5.4
x=8
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