1) x = 3/4 - 9/20x = 15/20 - 9/20x = 6/20x = 3/10
Ответ: x = 3/10
2) x = 25/36 - 5/18x = 25/36 - 10/36x = 15/36x = 5/12
Ответ: x = 5/12
1) x = 3/4 - 9/20
x = 15/20 - 9/20
x = 6/20
x = 3/10
Ответ: x = 3/10
2) x = 25/36 - 5/18
x = 25/36 - 10/36
x = 15/36
x = 5/12
Ответ: x = 5/12