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(31.9+x)/2=31.8
We move all terms to the left:
(31.9+x)/2-(31.8)=0
We add all the numbers together, and all the variables
(x+31.9)/2-(31.8)=0
We add all the numbers together, and all the variables
(x+31.9)/2-31.8=0
We multiply all the terms by the denominator
(x+31.9)-(31.8)*2=0
We add all the numbers together, and all the variables
(x+31.9)-63.6=0
We get rid of parentheses
x+31.9-63.6=0
We add all the numbers together, and all the variables
x-31.7=0
We move all terms containing x to the left, all other terms to the right
x=31.7
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