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7.8x-3.7=4.1
We move all terms to the left:
7.8x-3.7-(4.1)=0
We add all the numbers together, and all the variables
7.8x-7.8=0
We move all terms containing x to the left, all other terms to the right
7.8x=7.8
x=7.8/7.8
x=1
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