Решите уравнения (5 1/7+х)-6 2/3=1 17/21

(5 1/7+х)-6 2/3=1 17/21 5 1/7+х=1 17/21 +6 2/3 х=1 17/21 +6  14/21 -5 1/7 х=7 31/21 - 5 3/21 х= 2 28/21 х=3 7/21 х=3 1/3