Question

State true or false and write the formula.
(a) 17 + 15 = 15 + (– 17) (b) 64 – (+ 64) = 0
(c) [(– 17) + 8] + 20 = [8 + (– 17)] + 20 (d) (– 54) + 0 = 0

this question is for class 7
please give a right answer

Answer 1

Answer:

(a) False

17 + 15 = 15 + 17 = 32

(b) True

64 - (+64) = 64 - 64 = 0

(c)True

[-17 + 8] + 20 = [8 + (-17)] + 20 = (8 - 17) + 20 = 20-9= 11

(d) False

(-54) + 0 = 0 - 54 = - 54