Ex 2 :
a) 8 x (10 +6) = 8 x 16 = 128
b) (7 x 9) + (15 x 11) = 63 + 165 = 228
c) 7 + (11 x 4) = 7 + 44 = 51
d) (8 + 5) x (20 + 14) = 13 x 34 = 442
e) 24 - (20/5) = 24 - 4 = 20
f) (24 - 20) / 5 = 4/5 = 0,8
Ex 3 :
27 - 3 x 4
27 - 12
15
(4+3) x (8-5)
7 x 3
21
24 / 6-5
4 -5
-1
24 / (6 - 5)
24 / 1
24
