15 3/8 : (2 3/4х+5 5/6) - 1 1/2 = 3/4
15 3/8 : (2 3/4х+5 5/6) = 1 1/2 + 3/4
15 3/8 : (2 3/4х+5 5/6) = 1 2/4 + 3/4
15 3/8 : (2 3/4х+5 5/6) = 2 1/4
15 3/8 : (2 3/4х+5 5/6) = 2,25
(2 3/4х+5 5/6) = 15 3/8 : 2 1/4
(2 3/4х+5 5/6) = 123/8 • 4/9
(2 3/4х+5 5/6) = 41/2 • 1/3
(2 3/4х+5 5/6) = 41/6
(2 3/4х+5 5/6) = 6 5/6
2 3/4х = 6 5/6 - 5 5/6
2 3/4х = 1
х = 1 : 2 3/4
х = 1/1 • 4/11
х = 4/11
