Odpowiedź:
a) ( 3 2/5 + 2 4/5 ) : 6/7 =
= 5 6/5 : 6/7 =
= 6 1/5 : 6/7 =
= 31/5 × 7/6 =
= 217/30=
= 7 7/30
b) 3/4 : 4 1/2 + 7 : 1 1/6=
= 3/4 : 9/2 + 7/1 : 7/6=
= 3/4 × 2 /9 + 7/1 × 6/7 =
= 6/36 + 42 /7 =
= 1/6 + 6 =
= 6 1/6
c) 3/5 : ( 1 1/2 - 3/4 ) =
= 3/5 : ( 3/2 - 3/4) =
= 3/5 : ( 6/4 - 3/4 ) =
= 3/5 : 3/4 =
= 3/5 × 4 /3 =
= 12/15.
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Odpowiedź:
a) ( 3 2/5 + 2 4/5 ) : 6/7 =
= 5 6/5 : 6/7 =
= 6 1/5 : 6/7 =
= 31/5 × 7/6 =
= 217/30=
= 7 7/30
b) 3/4 : 4 1/2 + 7 : 1 1/6=
= 3/4 : 9/2 + 7/1 : 7/6=
= 3/4 × 2 /9 + 7/1 × 6/7 =
= 6/36 + 42 /7 =
= 1/6 + 6 =
= 6 1/6
c) 3/5 : ( 1 1/2 - 3/4 ) =
= 3/5 : ( 3/2 - 3/4) =
= 3/5 : ( 6/4 - 3/4 ) =
= 3/5 : 3/4 =
= 3/5 × 4 /3 =
= 12/15.