х = 2 ¹/₂ = 2,5
Пошаговое объяснение:
5 3/21-x=2 9/14
5 3/21 - 2 9/14 = х
4 24/21 -2 9/14 = х
4 24*2/21*2 -2 9*3/14*3 = х
4 48/42 - 2 27/42 =х
2 21/42 = х
х= 2 ¹/₂ = 2,5
Проверка
5 3/21- 2 1/2=2 9/14
4 24*2/21*2 - 2 1*21/2*21=2 9/14
4 48/42 - 2 21*42 = 2 9/14
2 27/42= 2 9/14
2 9/14= 2 9/14
х = 2 ¹/₂ = 2,5
Пошаговое объяснение:
5 3/21-x=2 9/14
5 3/21 - 2 9/14 = х
4 24/21 -2 9/14 = х
4 24*2/21*2 -2 9*3/14*3 = х
4 48/42 - 2 27/42 =х
2 21/42 = х
х= 2 ¹/₂ = 2,5
Проверка
5 3/21- 2 1/2=2 9/14
4 24*2/21*2 - 2 1*21/2*21=2 9/14
4 48/42 - 2 21*42 = 2 9/14
2 27/42= 2 9/14
2 9/14= 2 9/14