It says simplify each expression

a. -42 + (-17)

Note that one negative and one positive = negative

-42 + (-17) = -42 - 17 = -59

b. (-42)/(-7)

Note that when dividing or multiplying two negatives, the answer will be positive

(-42)/(-7) = 6

c. (-5)² = (-5)(-5) = 25

25 is your answer

hope this helps

2.   2 3/5.

3.   2 1/2.

step-by-step explanation:

6 - 3 2/5

= 6 -   17/5

= 30/5 - 17/5

= 13/5

= 2 3/5 (answer).

5 1/4 - 2 3/4

= 21/4 - 11/4

= 10/4

= 2 1/2 (answer).

google dat sis

step-by-step explanation: