Пошаговое объяснение:
(2/3 х + 1/6) * 1 1/5= 2 6/10
(2/3 х + 1/6) * 6/5= 26/10
12/15 х +6/30= 26/10
4/5 х +2/10= 26/10
4/5 х = 26/10-2/10
4/5 х = 24/10
х = 24/10: 4/5
х = 24/10 * 5/4
х = 120/40
х=3
x = 3
