Răspuns:
a) numărătorul
(11/24+11/36):11/6=11(1/24+1/36)×6/11=
6/24+6/36=³1/4+²1/6=(3+2)/12=5/12
numitorul
(³11/6-²5/9):23/5=(33-10)/18×5/23=
23/18×5/23=5/18
fracția (5/12)/(5/18)=5/12×18/5=18/12=
3/2
b)numărătorul
(3 1/4+2 1/6):5/6=(13/4+13/6)×6/5=
13/2(³1/2+²1/3)×6/5=13/2×(5/6)×6/5=
13×5×6)/(2×6×5)=13/2
numitorul
(2 5/8-1 3/4)13/6=
(21/8-²7/4)13/6=(21-14)/8× 13/6=
7/8 ×13/6=(7×13)/48
fracția
(13/2)/[(7×13)/48]=48/2×7=24/7
