Odpowiedzi

2010-03-29T22:46:39+02:00
C)12-91:(0,12+1/4*(-2,3))=12-91:(0,12+0,25*(-2,3))=
=12-91:(0,12-0,575)=12-91:(-0,455)=12+200=212

d) 4+16:(0,25)^(-1)=4+16:(1/4)^(-1)=4+16:(4/1)=4+16*1/4=
=4+4=8

e) 0,75+1/4*1/5-1/5*10/4=3/4+1/20-1/2=
=15/20+1/20-10/20=6/20=3/10

f) 15/12*5/12=5/4*5/12=25/48