А) 5+2 3/8 = 7 3/8;
б) 10 3/4-7 = 3 3/4;
в) 4 1/6+10 = 14 1/6;
г) 12 8/15-12 = 8/15;
д) 4 1/9+3 4/9 = 7 5/9;
е) 7 5/7-4 3/7 = 3 2/7;
ж) 3 8/11+5 2/11 = 8 10/11;
з) 9 7/12-7 6/12 = 2 1/12;
и) 4 3/5+2 4/5 = 6 7/5 = 7 2/5;
к) 8 9/13+7 12/13 = 15 21/13 = 16 8/13;
л) 5 3/5-1 4/5 = 3 4/5;
м) 4 5/11-2 8/11 = 1 8/11;
н) 4-5/9 = 3 4/5;
о) 8-7/12 = 7 5/12;
п) 5-3 3/8 = 1 5/8;
р) 4-3 5/9 = 4/9