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6.2x-2.5=40.9
We move all terms to the left:
6.2x-2.5-(40.9)=0
We add all the numbers together, and all the variables
6.2x-43.4=0
We move all terms containing x to the left, all other terms to the right
6.2x=43.4
x=43.4/6.2
x=7
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