Question

4) 53
7)
13
17
11
||
y + 300
7 + 2y
85
Жду

Answer 1

Ответ:

https://tex.z-dn.net/?f=%5Cfrac%7B13%7D%7B17%7D%3D%5Cfrac%7B7%2B2y%7D%7B85%7D%20%5C%5C%5C%5C%5Cfrac%7B13%7D%7B17%7D*85%3D%5Cfrac%7B7%2B2y%7D%7B85%7D*85%5C%5C%5C%5C13*5%3D7%2B2y%5C%5C%5C%5C65%3D7%2B2y%5C%5C%5C%5C2y%3D58%5C%5C%5C%5Cy%3D29%5C%5C%5C%5COtvet%3A%5Cboxed%7B29%7D

Объяснение:

тут можно посмотреть