Răspuns :
3/4+4/21×42/4= 3/4+2 = 3/4+8/4 = 11/4
(11/12+3/4):36/24 = (11/12+9/12):36/24 = 20/12 x 24/36 = 5/1x2/9 = 10/9
(11/12+3/4):36/24 = (11/12+9/12):36/24 = 20/12 x 24/36 = 5/1x2/9 = 10/9