х+1 3/8=2 3/4+5/16
х+1 3/8=2 12/16 + 5/16
х+1 3/8=2 17/16
х+1 3/8=3 1/16
х = 3 1/16 - 1 3/8
х = 3 1/16 - 1 6/16
х = 1 11/16
х+1 3/8=2 3/4+5/16
х+1 3/8=2 12/16 + 5/16
х+1 3/8=2 17/16
х+1 3/8=3 1/16
х = 3 1/16 - 1 3/8
х = 3 1/16 - 1 6/16
х = 1 11/16