Question

XI
2u
19
45)
1. Simplify:
(a) 20 = 4 + 5 =
(b)
28-25 - 5 =
(c) 21-12 = 3 x 2 =
(d) 16 + 8 = 4–2 x 3 =
(e) 15-2 x 5 + 9 =
(f) 30 = 6 + 8 x 3-10 =
(g) 7 ~ 50 + 16 = 8 -120 =
(h) 620 = 5 + 15-15 =
6) 21 = 7 + 16-5x 3 =
(i) 49-57 + 8 = 4x4 =​

Answer 1

Answer:

(a)20=9

20-9

11

(b)28-30

=-2