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2.5y+6y-81=7y+102+65y
We move all terms to the left:
2.5y+6y-81-(7y+102+65y)=0
We add all the numbers together, and all the variables
2.5y+6y-(72y+102)-81=0
We add all the numbers together, and all the variables
8.5y-(72y+102)-81=0
We get rid of parentheses
8.5y-72y-102-81=0
We add all the numbers together, and all the variables
-63.5y-183=0
We move all terms containing y to the left, all other terms to the right
-63.5y=183
y=183/-63.5
y=-2+8/9.07142857143
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