8. Найди значения выражений a-8 и a+10 при a=12, a = 20, a=28, a=43.

a = 12, a - 8 = 12 - 8 = 4, a + 10 = 12 + 10 = 22

a = 20, a - 8 = 20 - 8 = 12, a + 10 = 20 + 10 = 30

a = 28, a - 8 = 28 - 8 = 20, a + 10 = 28 + 10 = 38

a = 43, a - 8 = 43 - 8 = 35, a + 10 = 43 + 10 = 53

Ответ: 4 и 22, 12 и 30, 20 и 38, 35 и 53