Question

Vă rog repede!! Cine rezolvă primu primește coroana!!!​

Answer 1

Răspuns:

a)= 7

3

b)= 27

175

c)= 30

d)= 99

52

e)= 2

f)= 25

6

Explicație pas cu pas:

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Answer 2

Răspuns:

Explicație pas cu pas:

a) (12/5:4/5):9/35=(12/5·5/4)·35/9=[(12·5)/(5·4)]·35/9=3·7/9=7/3

b) 12/25:(4/5:9/35)=12/25:(4/5·35/9)=12/25:[(4·35)/(5·9)]=12/25:[(4·5)/(35·9)]=12/25:(4·7/9)]=12/25·9/(4·7)=(12·9)/(25·4·7)=(3·9)/25·7 = 27/175

c) (25/36:7/16):(60/49:162/7)=(25/36·16/7):(60/49·7/162)=(25·16/36·7):(60·7/49·162)= (25·4/9·7):(60/7·162)=(25·4/9·7):(10/7·27)=(25·4/9·7)·(7·27/10)=(25·4·7·27)/(9·7·10)=5·4·3/ 2=5·2·3=30

d) (11/12:13/18):22/33= (11/12·18/13)·33/22=(11·18·33)/(12·13·22)=(18·33)/(12·13·2)=(3·33)/2·13·2)=99/52

e) (19/45:7/30):19/21=(19/45·30/7)·21/19=(19·30·21)/(45·7·19)= (30·21)/(45·7)= (2·3)/3=2

f) (13/12:7/15):39/70=(13/12·15/7)·70/39=(13·15·70)/(12·7·39)=(15·10)/(12·13)=(5·10)/(4·13)=(5·5)/2·13)=25/26