Выполните сложение: а) 3 2/3 + 1 2/3 = б) 1 4/9 + 7 /18 = в) 8 5/6 + 2 3/8 = г) 8 4/5 + 1 1/3 = д) 12 5/6 + 4/15= е)

а) 3 2/3 + 1 2/3 =11/3 + 5/3 = 16/3 = 5 1/3;

б) 1 4/9 + 7/18 = 13/9 + 7/18 = 26/18 + 7/18 = 33/18 = 11/6 = 1 5/6; 

в) 8 5/6 + 2 3/8 = 53/6 + 19/8 = 212/24 + 57/24 = 269/24 = 11 5/24; 

г) 8 4/5 + 1 1/3 = 44/5 + 4/3 = 132/15 + 20/15 = 152/15 = 10 2/15;

д) 12 5/6 + 4/15 = 77/6 + 4/15 = 385/30 + 8/30 = 393/30 = 131/10 = 13 1/10;  

е) 2/34 + 1 2/3 = 2/34 + 5/3 = 6/102 + 170/102 = 176/102 = 88/51 = 1 37/51; 

ж) 7/20 + 8 3/4 = 7/20 + 35/4 = 7/20 + 175/20 = 182/20 = 91/10 = 9 1/10; 

3) 8 3/5 + 1 9/10 = 43/5 + 19/10 = 86/10 + 19/10 = 105/10 = 10 5/10;

и) 6 2/3 + 8 5/7 = 20/3 + 61/7 = 140/21 + 183/21 = 323/21 = 15 8/21.