Odpowiedź:
a) 3/4· (-12)- 1/5= -9-1/5= -9 1/5
b) 1 2/3· (-5/6)· (-2 4/5)= 5/3· (-5/6)· (-14/5)= 350/90= 3 80/90= 3 8/9
c) -1 3/4· 2 1/7+ 3/8= -7/4· 15/7+ 3/8= -3 3/4+ 3/8= -3 6/8+ 3/8= -3 3/8
d) 5- 2 4/5· (-2,5)= 5- 14/5·(- 5/2)= 5+ 7= 12
Liczę na naj!!!!