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1.3x-1.666=12.4
We move all terms to the left:
1.3x-1.666-(12.4)=0
We add all the numbers together, and all the variables
1.3x-14.066=0
We move all terms containing x to the left, all other terms to the right
1.3x=14.066
x=14.066/1.3
x=10+1/1.21951219512
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