Răspuns:
Explicație pas cu pas:
1) 1 / 3 + 1 / 6 = 2 / 6 + 1 / 6 = 3 / 6 = 1 / 2
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2). ( 101 / 90 ) : ( 1 + 1 / 9 + 1 / 90 ) = 1
= ( 101 / 90 ) : ( 90 + 10 + 1 ) / 90 =
= ( 101 / 90 ) : ( 101 / 90 ) =
= ( 101 / 90 ) × ( 90 / 101 ) =
= 1