1 2/7 +X=2 y+3 2/5=6
1 2/7 + х = 2 х=2- 1 2/7 х=2-9/7 х=14/7-9/7 х=5/7 --- у+3 2/5 = 6 у=6-3 2/5 у= 6-17/5 у=30/5 - 17/5 у=13/5 у=2 3/5