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2.8+x/3.1=2.7
We move all terms to the left:
2.8+x/3.1-(2.7)=0
We add all the numbers together, and all the variables
x/3.1+0.1=0
We multiply all the terms by the denominator
x+(0.1)*3.1=0
We add all the numbers together, and all the variables
x+0.31=0
We move all terms containing x to the left, all other terms to the right
x=-0.31
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