6,76-2,2x=7 5/28-3 1/4
6,76-2,2x=7 5/28-3 7/28 6,76-2,2x=3 26/28 2,2x=6,76-3 13/14 2,2x=6 19/25-3 13/14 2,2x=2 291/350 x=991/350*5/11 x=1 221/770