Odpowiedź:
Szczegółowe wyjaśnienie:
-1 1/4- 2 2/3= - 4/4 - 1/4 - 6/3 - 2/3 = - 5/4 - 8/3 =
= - 15/12 - 32/12 = - 47/12 = - 36/12 - 11/12 = - 3 -11/12 = - 3 11/12
2 12/44: 2 6/11 = 2 3/11 : 2 6/11 =
= (22/11 + 3/11) : (22/11 + 6/11) =
= 25/11 : 28/11 = 25/11 * 11/28 = 25/28
-13 21/23: (-32/138) =
= (- 299/23 - 21/23) : (- 32/138) =
= - 320/23 : (- 16/69) = 320/23 * 69/16 = 320*69/16*23 = 20*3 = 60
