I was assigned two of these problems for my homework, and i have no clue what i am suppose to do. These are typed exactly as they appear on my worksheet. Any help would be greatly appreciated.

1.)

(+ + 5 - - 4 + - 5) - (+ - 2 + + 6) - (7 + 4 + -5)

2.)

(+ - 6 - - 5 + 6) - (- - 7 + - 4 + 6) - (- - 8 + - 5 - + 7)