CatPlayer

Ответ:

1/3

Пошаговое объяснение:

4x + 1/15 = 7/5

4x +1/15 = 21/15

4x=21/15-1/15

4x=20/15

x=4/3 : 4

x=1/3

leklek001 4х+1/15 = 7/5(×3)
4х+1/15 = 21/15
4х = 21/15-1/15
4х = 20/15
х = 20/15 : 4/1
х = 20/15×1/4 (сокращаем 20 и 4)
х = 5/15 (сокращаем на 5)
х = 1/3