Решите уравнение (5 1/7+x)-6 2/3=1 17/21

Question

Решите уравнение (5 1/7+x)-6 2/3=1 17/21

Answer 1

( 5 1/7 + х) = 6 2/3 + 1 17/21
5 1/7 + х = 20/3 + 38/21
36/7 + х = 140/21 + 38/21
36/7 + х = 178/21
х = 178/21 - 36/7
х = 178/21 - 108/21
х = 70/21 = 10/3
х = 3 1/3