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4+2x=17.8
We move all terms to the left:
4+2x-(17.8)=0
We add all the numbers together, and all the variables
2x-13.8=0
We move all terms containing x to the left, all other terms to the right
2x=13.8
x=13.8/2
x=6+1/1.1111111111111
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