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4x-2.1=5.6
We move all terms to the left:
4x-2.1-(5.6)=0
We add all the numbers together, and all the variables
4x-7.7=0
We move all terms containing x to the left, all other terms to the right
4x=7.7
x=7.7/4
x=1+2.1764705882353/2.3529411764706
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