Реши уравнение: (3 9/14 +х)-2 5/14=6 7/14
(3 9/14 + х) - 2 5/14 = 6 7/14 3 9/14 + х = 6 7/14 + 2 5/14 3 9/14 + х = 8 12/14 х = 8 12/14 - 3 9/14 х = 5 3/14 --------------------------------------------- (3 9/14 + 5 3/14) - 2 5/14 = 6 7/14 8 12/14 - 2 5/14 = 6 7/14 6 7/14 = 6 7/14