x - 37 7/21 = 100 5/28
x - 37 1/3 = 25 5/7
x - 37/3 = 125/7
x = 125/7 + 37/3
x = 634/21=30 4/21
х = 37 7/21 = 100 5/28
х - 37 1/3 = 100 5/28
х = 100 5/28 + 37 1/3
х = 100 15/ 84 + 37 28/84
х = 137 43/84
