I still can't understand this one.In class we got 42 but I got 48 and when I check it none of them match up

Question

4/8y-21=3 What is y?

Answer 1

Assuming you copied the problem correctly, your answer is correct.

4/8y-21=3

4/8y = 3 + 21

4/8y = 24

y = 24 / (4/8)

y = 24 * (8/4)

y = 192/4 = 48

Proof:
1/2 (48) - 21 = 3
24 - 21 = 3

Answer 2

If you mean
(4/8)y - 21 = 3
then y=48 as you got.
If the question were
(4/8)y-21=0
then y=42

Answer 3

Thank you!

Answer 4

You're welcome.