Question

oblicz: a) 1/2:1/3= b)2i2/3:8/9= c) 2i3/8:1i1/16= d) 4/5:2/9= e)5/8:3i3/4= f)2i2/3:5i1/3= g)3/8:3/4= h)1i17:1i18= i)8i1/6:1i3/4= j)2i1/2:5/8= k)1i2/5:2i3/4= l) 3i9/11:1i13/22= zad2 Dla kazdej z liczb: 2/3,1i1/4,2i2/5,3i1/8,5i5/6 znajdz liczbę półtora raza od niej mniejsza. Prosze pomuście

Answer 1

a) 1/2 :1/3= 1/2 *3/1= 3/2 = 1i1/2 

b) 2i2/3 : 8/9= 8/3 *9/8= 1/1 * 3/1= 3

c) 2i3/8 :1i1/16= 19/8 :17/16= 19/8 *16/17= 19/1 *2/17= 38/17= 2i4/17

d) 4/5 : 2/9 = 4/5 *9/2= 36/10= 3i6/10 =3i3/5 

e) 5/8 :3i3/4= 5/8 :15/4= 5/8 *4/15= 1/2 *1/3= 1/6

f) 2i2/3 :5i1/3= 8/3 :16/3= 8/3 *3/16= 1/1 *1/2 = 1/2

g) 3/8 :3/4= 3/8 *4/3= 1/2 *1/1= 1/2

i) 8i1/6 : 1i3/4= 49/6 : 7/4 = 49/6 *4/7 = 7/3 *2/1= 14/3= 4i2/3

j) 2i1/2 : 5/8= 5/2 *8/5= 1/1 *4/1= 4

k) 1i2/5 : 2i3/4 =7/5 : 11/4= 7/5 * 4/11= 28/55

l) 3i9/11 : 1i13/22 = 42/11 : 35/22= 42/11 *22/35= 6/1 *2/5 = 12/5= 2i2/5zad.2

zad.2

połtora razy mniejszą to znaczy podzielić na 1i1/2 = 3/2

2/3 : 3/2 = 2/3 * 2/3 = 4/9

 

1i1/4 : 3/2 = 5/4 * 2/3 = 10/12= 5/6

 

2i2/5 : 3/2= 12/5 * 2/3= 4/5 * 2/1 = 8/5 = 1i3/5

 

3i1/8 : 3/2 = 25/8 * 2/3= 25/4 * 1/3= 25/12 = 2i1/12

 

5i5/6 : 3/2 = 35/6 *2/3= 35/3 * 1/3 = 35/9= 3i8/9