Какое из чисел 3, 12, 14 является корнем уравнения: 1) х + 16 = 28; 2) 4х - 5 = 7?

Every summer I went to the country with my sister. We visited our grandparents who were happy to see us. Our grandfather was a postman and we helped him to deliver letters and newspapers. We were fond of working in the garden. My sister and I swam in the river which was near our house. We played badminton and volleyball. In the evening we went for a walk. On Saturdays when our parents came, all of us barbecued in the forest. I enjoyed my summer holidays.