Răspuns
Explicație pas cu pas:
x = 5 / 6 si y = 3 intregi si 3 / 4 = ( 3 x 4 + 3 ) / 4 = 15 / 4
y = 15 / 4
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a ) x - y =
= 5 / 6 - 15 / 4 =
= 10 / 12 - 45 / 12 =
= - 35 / 12 =
= - 2 intregi si 11 / 12
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b) x : y = 2 / 9
= ( 5 / 6 ) : ( 15 / 4 ) =
= ( 5 / 6 ) x ( 4 / 15 ) =
= ( 5 / 15 ) x ( 4 / 6 ) =
= ( 1 / 3 ) x ( 2 / 3 ) =
= 2 / 9