( x-3 целых 2/7)+ 1 целая 3/7=6 целых 2/7
Х=6 2/7+3 2/7-1 3/7 Х=8 1/7
(х- 3 2/7) + 1 3/7 =6 2/7 (х- 3 2/7) = 6 2/7 - 1 3/7 (х- 3 2/7) = 4 6/7 х= 4 6/7 + 3 2/7 х= 8 1/7