Помогите плиз 599 600
599) 1. ab = 6 3. mn = 9 5. ab = 17 2. xy = 6 4. xy = 3 6. xy = 4 600) 1. 2x + 6y 3. 8m + 11n 2. 5m + 6n 4. 15a - 5b