Решите уравнение:а)2 1/3R=4 1/2*1 1/9;
A) 2 1/3R = 4 1/2 * 1 1/9 7/3R = 9/2 * 10/9 = 10/2 7/3R = 5 R = 5 : 7/3 R = 5 * 3/7 = 15/7 R = 2 1/7 --------------------- Проверка: 7/3 * 15/7 = 9/2 * 10/9 15/3 = 10/2 5 = 5