Question

Найдите сумму и разность чисел: 60 и 40, 50 и 30, 40 и 20.

Answer 1

60и 40=100 и 20

50 и 30=80 и 20

40 и 20=60 и 20

Answer 2

60 + 40 = 100
60 - 40 = 20

50 + 30 = 80
50 - 30 = 20

40 + 20 = 60
40 - 20 = 20