+10
6 лет назад
Математика
5 - 9 классы
1/x + 1/1 + 2/3x = 2/5
1/x + 2/3x = 2/5
5/3x=2/5
25 = 6x
6x = 25
x=25/6 или x=4*1/6 или x=4.16
1/x + 1/1 + 2/3x = 2/5
1/x + 2/3x = 2/5
5/3x=2/5
25 = 6x
6x = 25
x=25/6 или x=4*1/6 или x=4.16