18.9 + 32.9 = 51.8
75 ÷ 15 - 15 ÷ 5 = 5 - 3 = 2
3 (7 8 + 52) = 3 (56 + 52) = 3 108 = 324
(12 - 4) (80 ÷ 1) = 8 80 = 640
24 7 ÷ 4 - 4 3 = 168 ÷ 4 - 12 = 42 - 12 = 30
50 - 18 (64 ÷ 16) = 50 - 18 4 = 50 - 72 = -22
18.9 + 32.9 = 51.8
75 ÷ 15 - 15 ÷ 5 = 5 - 3 = 2
3 (7 8 + 52) = 3 (56 + 52) = 3 108 = 324
(12 - 4) (80 ÷ 1) = 8 80 = 640
24 7 ÷ 4 - 4 3 = 168 ÷ 4 - 12 = 42 - 12 = 30
50 - 18 (64 ÷ 16) = 50 - 18 4 = 50 - 72 = -22