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Cat face 5/6:7/3•0,4?

Răspuns :

5/6*3/7 * 4/10 = 5*3*4 / 6*7*10 = 1*1*4 / 2*2*7 = 1/7
5/6 : 7/3·0.4 =

= 5/6·3/7·4/10

= 5·3·4/6·7·10 (simplificam)

= 1·1·4/2·2·7 (simplificam)

= 1/7