Question

Q1. State true or false
(1). 17+ 15 = 15+(-17) [ ]
(2). 64-(+64) =0 [ ]
(3). [(-17)+8]+20=[8+(-17) ]+20 [ ]
(4). (-54) +0=0 [ ]​

Answer 1

Answer:

(a) -17 + 15 = 15 +(-17) is True. (b)-64-(+64) = 0 is False. Answer =》-64 - 64 = -128. (c) [(-17) + 8] + 20 = [8 + (-17)] + 20 is False.

Answer 2

Answer:

1. False
2. True
3. True
4. False

Step-by-step explanation:

Because

1. 32 ≠ -2
2. 0 = 0
3. 11 = 11
4. -54 ≠ 0