у+4 =10
у=10-4
у=9-4
у=5
у + 4 8/11 = 10 7/11
у = 10 7/11 - 4 8/11
у = 9 18/11 - 4 8/11
у = 5 10/11
Проверка: 5 10/11 + 4 8/11 = 9 18/11 = 10 7/11
10 7/11 = 10 7/11
у+4
=10![\frac{7}{11}](/tpl/images/0138/3591/a0a11.png)
у=10
-4 ![\frac{8}{11}](/tpl/images/0138/3591/d2608.png)
у=9
-4 ![\frac{8}{11}](/tpl/images/0138/3591/d2608.png)
у=5![\frac{10}{11}](/tpl/images/0138/3591/6607f.png)
у + 4 8/11 = 10 7/11
у = 10 7/11 - 4 8/11
у = 9 18/11 - 4 8/11
у = 5 10/11
Проверка: 5 10/11 + 4 8/11 = 9 18/11 = 10 7/11
10 7/11 = 10 7/11