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4x+1.4=2x+2.8
We move all terms to the left:
4x+1.4-(2x+2.8)=0
We get rid of parentheses
4x-2x-2.8+1.4=0
We add all the numbers together, and all the variables
2x-1.4=0
We move all terms containing x to the left, all other terms to the right
2x=1.4
x=1.4/2
x=1/1.4285714285714
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