Click and drag like terms onto each other to simplify fully.

xxminus, 4−4plus, 5+5minus, 6, y−6yminus, 2, y−2yplus, 3, y+3y

xxminus: 0

4−4plus: 0
5+5minus: 10
6
y−6yminus: -5y
2
y−2yplus: -y
3
y+3y: 4y