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12.11y-72.66+5.19y=8.65y-51.9+31.14
We move all terms to the left:
12.11y-72.66+5.19y-(8.65y-51.9+31.14)=0
We add all the numbers together, and all the variables
12.11y+5.19y-(8.65y-20.76)-72.66=0
We add all the numbers together, and all the variables
17.3y-(8.65y-20.76)-72.66=0
We get rid of parentheses
17.3y-8.65y+20.76-72.66=0
We add all the numbers together, and all the variables
8.65y-51.9=0
We move all terms containing y to the left, all other terms to the right
8.65y=51.9
y=51.9/8.65
y=6+-7.105427357601E-15/8.65
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