4 5/19 +x+1 1/38 = 12 1/2 решите уравнение

Решение:4 5/19 + x + 1 1/38 = 12 1/2;х = 12 1/2 - 4 5/19 - 1 1/38 = 7 (19 - 10 - 1)/38 = 7 8/38 = 7 4/19;Проверка:4 5/19 + 7 4/19 + 1 1/38 = 81/19 + 137/19 + 39/38 = 162/38 + 274/38 + 39/38 = 475/38;475/38 = 12 19/38 = 12 1/2;12 1/2 = 12 1/2.Ответ: х = 7 4/19.