Ответ:
Пошаговое объяснение:
1)
29/14 - 5/3х = 26/21
5/3х = 29/14 - 26/21
5/3х = 87/42 - 52/42
5/3х = 35/42
5/3х = 5/6
х = 5/6 : 5/3
х = 5/6 * 3/5
х = 1/2
2)
(8/15 + 2/9х) : 3/5 = 2
8/15 + 2/9х = 2 * 3/5
8/15 + 2/9х = 6/5
2/9х = 6/5 - 8/15
2/9х = 18/15 - 8/15
2/9х = 10/15
2/9х = 2/3
х = 2/3 : 2/9
х = 2/3 * 9/2
х = 3
3)
2/5х + 3/10х - 2/15х = 1/6
12/30х + 9/30х - 4/30х = 1/6
17/30х = 1/6
х = 1/6 : 17/30
х = 1/6 * 30/17
х = 5/17