14/24 - 15/40 = 7/12 - 3/8 = 14/24 - 9/24 = 5/24
4/24 + 3/36 = 1/6 + 1/12 = 2/12 + 1/12 = 3/12 = 1/4 = 0,25
Пошаговое объяснение:
1) 14/24 - 15/40 = (7*2)/(12*2) - (3*5)/(8*5)= 7/12- 3/8= (7*2)/24- (3*3)/24=
14/24-9/24=5/24
2) 4/24 + 3/36=(2*2)/(2*12) + 3/(12*3)=2/12+1/12=3/12=1/4
14/24 - 15/40 = 7/12 - 3/8 = 14/24 - 9/24 = 5/24
4/24 + 3/36 = 1/6 + 1/12 = 2/12 + 1/12 = 3/12 = 1/4 = 0,25
Пошаговое объяснение:
1) 14/24 - 15/40 = (7*2)/(12*2) - (3*5)/(8*5)= 7/12- 3/8= (7*2)/24- (3*3)/24=
14/24-9/24=5/24
2) 4/24 + 3/36=(2*2)/(2*12) + 3/(12*3)=2/12+1/12=3/12=1/4