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Calculați a) (12/25:4/5)÷9/35= b) 12/25:(4/5:9/35)= c) (25/36:7/16):(60/49÷162/7)=

Răspuns :

Matandreea7450Deaa

a) (12/25 • 5/4) • 35/9

3/5 • 35/9

= 7/3.


b) 12/25 : (4/5 • 35/9)

12/25 : (4 • 7/9)

12/25 : 28/9

12/25 • 9/28

3/25 • 9/7

= 27/175.


c) (25/36 • 16/7) : (60/49 • 7/162)

(25/9 • 4/7) : (10/7 • 1/27)

100/63 : 10/189

100/63 • 189/10

10 • 3

= 30.

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