Question

C) 25 - 120 + [18 - (13 + 10.2)]] =
d) 69 - 126 + (67 - 42)2 =​

Answer 1

C) 25 - 120 + [18 - (13 + 10 × 2)]

25 - 120 + [18 - (13 + 20)]

25 - 120 + [18 - 33]

25 - 120 + [-15]

25 - 120 - 15

25 - 135

-110

D) 69 - 126 + (67 - 42) × 2

69 - 126 + 25 × 2

69 - 126 + 50

119 - 126

-7