ответ: 126 13/84
х - 26 7/21 = 100 - 5/28
x = 99 23/28 + 26 1/3
x = 99 69/84 + 26 28/84
x = 126 13/84
ответ: 126 13/84
х - 26 7/21 = 100 - 5/28
x = 99 23/28 + 26 1/3
x = 99 69/84 + 26 28/84
x = 126 13/84