Пошаговое объяснение:
(2 1/4 + 3 2/3) : (8 1/2 - 1 2/5) * 1,2 = 1
2 1/4 + 3 2/3 = 9/4 + 11/3 = (27 + 44) / 12 = 71/12
8 1/2 - 1 2/5 = 17/2 - 7/5 = (85 - 14) / 10 = 71/10
71/12 : 71/10 = 71/12 * 10/71 = 5/6
5/6 * 1,2 = 5/6 * 6/5 = 1
1/2 * х + 1/3 *х + 1/4 * х = 26/27
13/12 * х = 26/27
х = 26/27 : 13/12 = 26/27 * 12/13
х = 8/9
Пошаговое объяснение:
(2 1/4 + 3 2/3) : (8 1/2 - 1 2/5) * 1,2 = 1
2 1/4 + 3 2/3 = 9/4 + 11/3 = (27 + 44) / 12 = 71/12
8 1/2 - 1 2/5 = 17/2 - 7/5 = (85 - 14) / 10 = 71/10
71/12 : 71/10 = 71/12 * 10/71 = 5/6
5/6 * 1,2 = 5/6 * 6/5 = 1
1/2 * х + 1/3 *х + 1/4 * х = 26/27
13/12 * х = 26/27
х = 26/27 : 13/12 = 26/27 * 12/13
х = 8/9