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4x-0.2=1.9
We move all terms to the left:
4x-0.2-(1.9)=0
We add all the numbers together, and all the variables
4x-2.1=0
We move all terms containing x to the left, all other terms to the right
4x=2.1
x=2.1/4
x=1/1.90476190476
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