Answer:
○ Subtract 8 from both sides, then divide both sides by 1/3
Step-by-step explanation:
Perhaps the usual sequence of steps is ...
add 8:
3y = 27
divide by 3 (equivalently, multiply by 1/3)
y = 9
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If the division by 3 is done first, then the constant on the left becomes -8/3, so cancelling it requires adding 8/3 to both sides of the equation.
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If you do the last suggestion, you get ...
subtract 8 from both sides:
-16 +3y = 11
divide both sides by 1/3:
-48 +9y = 33 . . . . . . . does not solve the equation completely
