Only answer if your sure, 3y-y+2y-5=7-2y+5, what is y?

The first thing you need to do is combine like terms.

3y-y+2y-5 = 7-2y + 5 (Subtract y)

2y + 2y - 5 = 7-2y + 5 (Add 2y)

4y - 5 = 7-2y + 5 (add 5 and 7)

4y - 5 = 12-2y (add 2y to both sides)

6y - 5 = 12 (add 5 to both sides)

6y = 14 (divide by 6 on both sides)

y = 2.833333 (Simplify)

y = 2.83