Найдите x.

а) 1 2/3 * x = 3/5. 1 2/3 = 5/3. Уравнение: (5/3) * x = 3/5. x = (3/5) / (5/3) = 3/5 * 3/5 = 9/25. Ответ: x = 9/25. б) x * 1 7/9 = 1 2/3. 1 7/9 = 16/9, 1 2/3 = 5/3. Уравнение: x * (16/9) = 5/3. x = (5/3) / (16/9) = 5/3 * 9/16 = 45/48 = 15/16. Ответ: x = 15/16.