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2.5x-41.2x=3.5
We move all terms to the left:
2.5x-41.2x-(3.5)=0
We add all the numbers together, and all the variables
-38.7x-3.5=0
We move all terms containing x to the left, all other terms to the right
-38.7x=3.5
x=3.5/-38.7
x=-2.3333333333333/25.8
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