Question

determine how many different values can arise by inserting one pair of parentheses into the given expression. 3 − 7 − 9 − 5

Answer 1

Explanation:

(3 - 7) - 9 - 5 = -4 - 9 - 5

= -18

3 - (7 - 9) - 5 = 3 - (-2) - 5

= 3 + 2 - 5

= 5 - 5

= 0

3 - 7 - (9 - 5) = 3 - 7 - 4

= 3 - 11

= -8