Question

решите уравнения 1321- (х-2 целых 57) = 314

Answer 1

13/21 - х+ 2 5/7=3/14
13/21+19/7-3/14=х
(26+114-9)/42=х
х=131/42=3 5/42

Answer 2

13/21 - (х - 2 5/7) = 3/14

х - 2 5/7 = 13/21 - 3/14

х - 2 5/7 = 26/42 - 9/42

х - 2 5/7 = 17/42

х = 17/42 + 2 5/7

х = 17/42 + 2 30/42

х = 2 47/42

х = 3 5/42