Respostas

2013-06-16T18:00:34-03:00

a) 2/6 = 3/9 verdadeiro

(2/6) x 3 = 6/18

(3/9) x 2 = 6/18

 

b) 2/7 = 4/14 verdadeiro

(2/7) x 2 = 4/14

 

c) 10/20 = 6/3 falso

(10/20) x 3 = 30/60

(6/3) x 20 = 120/60 = 2

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