Пошаговое объяснение:
7у=9 1/3
y = 9 1/3 : 7
y = 28/3 * 1/7
y = 4/3
y = 1 1/3
7у = 9
7у =
у = : = *
у = = 1
Пошаговое объяснение:
7у=9 1/3
y = 9 1/3 : 7
y = 28/3 * 1/7
y = 4/3
y = 1 1/3
7у = 9
7у =
у =
:
=
* 
у =
= 1