X=6/7si y=1 5/7=
A) x×y=
B) y:x=


Răspuns :

6/7 • 12/7 = 72/49

12/7 • 7/6 = 2

Răspuns:

Explicație pas cu pas:

X = 6 / 7   si y = 1 intreg si 5 / 7 = ( 1 x 7 + 5 ) / 7 = 12 / 7

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a )   X × y = ( 6 / 7 ) × ( 12 / 7 ) = ( 6 × 12 ) / ( 7 × 7 ) = 72 / 49 =

=  1 intreg si 23 / 49

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b)    y : X = ( 12 / 7 ) : ( 6 / 7 ) = ( 12 / 7 ) × ( 7 / 6 ) =

=  ( 12 / 6 ) × ( 7 / 7 ) = 2 × 1 = 2

y : x = 2