Question 661918
Starting with
y - 4/2y + 3y - 5/5y
give common denominator of 2
2/2y - 4/2y + 6/2y - 2/2y
2/2y
1y or y
alternatively
4/2y is the same as 2y
5/5y is the same as 1y
so
y - 2y + 3y - y
1y or y