Odpowiedź:
zadanie 5.
a)
- 2 i 1/3 * (-27/28) =
= - 7/3 * (- 27/28) = (skracam 7 z 28 oraz 3 z 27)
= - 1/1 * (- 9/4)=
= 9/4=
= 2 i 1/4
b)
-3 i 3/8 : 5 i 1/16=
= - 27/8 : 81/16 =
= - 27/8 * 16/81= (skracam ułamki 27 z 81 oraz 8 z 16)
= - 1/1 * 2/3=
= - 2/3
c)
- 1 i 1/7 * 1 i 11/24 : 3/5=
= - 8/7 * 35/24 * 5/3= (skracam 8 z 24 oraz 7 z 35)
= - 1/1 * 5/3 * 5/3=
= - 5/3 * 5/3=
= - 25/9 =
= - 2 i 7/9
d)
3 i 1/2 - 3 i 1/6 : (-2 i 1/9) =
= 3 i 1/2 - 19/6 : (- 19/9) =
= 3 i 1/2 - 19/6 * (-9/19) =
= 3 i 1/2 - 1/2 * (- 3/1) =
= 3 i 1/2 + 3/2 =
= 3 i 1/2 + 1 i 1/2=
= 4 i 2/2=
= 5
Szczegółowe wyjaśnienie:
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Odpowiedź:
zadanie 5.
a)
- 2 i 1/3 * (-27/28) =
= - 7/3 * (- 27/28) = (skracam 7 z 28 oraz 3 z 27)
= - 1/1 * (- 9/4)=
= 9/4=
= 2 i 1/4
b)
-3 i 3/8 : 5 i 1/16=
= - 27/8 : 81/16 =
= - 27/8 * 16/81= (skracam ułamki 27 z 81 oraz 8 z 16)
= - 1/1 * 2/3=
= - 2/3
c)
- 1 i 1/7 * 1 i 11/24 : 3/5=
= - 8/7 * 35/24 * 5/3= (skracam 8 z 24 oraz 7 z 35)
= - 1/1 * 5/3 * 5/3=
= - 5/3 * 5/3=
= - 25/9 =
= - 2 i 7/9
d)
3 i 1/2 - 3 i 1/6 : (-2 i 1/9) =
= 3 i 1/2 - 19/6 : (- 19/9) =
= 3 i 1/2 - 19/6 * (-9/19) =
= 3 i 1/2 - 1/2 * (- 3/1) =
= 3 i 1/2 + 3/2 =
= 3 i 1/2 + 1 i 1/2=
= 4 i 2/2=
= 5
Szczegółowe wyjaśnienie: