a = 42 : 7 : 3 x 4 a = 6 : 3 x 4 a = 2 x 4 a = 8 b = 40 : 5 :2 : 2 b = 8 : 2 : 2 b = 4 : 2 B = 2 a) a + b = 8 +2 a + b = 10 a - b = 8 - 2 a - b= 6 a x b = 8 x 2 a x b = 16 a : b = 8 : 2 a : b = 4
a = 42 : 7 : 3 * 4 a = 6 : 3 * 4 a = 2 * 4 a = 8 b = 40 : 5 : 2 : 2 b = 8 : 2 : 2 b = 4 : 2 b = 2 a) a + b = 8 + 2 = 10 b) a - b = 8 - 2 = 6 c) a * b = 8 * 2 = 16 d)a : b = 8 : 2 = 4
