Odpowiedzi

2010-01-15T10:35:48+01:00
A) -2¾+(-1½)-(-4½)-[-(-5¼)+(-6⅔)]=
-2i3/4-1i2/4+4i2/4-[-(-5i3/12-6i8/12)]=
1/4-[11i11/12]
1/4-11i11/12=
3/12-11i11/12=-11i8/12=-11i2/3
B) 2-(-3,45)+(-7,15)-(-10,125)-3,425=
2+3,45-7,15+10,125-3,425=
15,575-10,575=5
C)-305+(-4,2)-(-0,8)+(-3¾)-(-12³/₂₀)=
-305-4,2+0,8-3i3/4+12i3/20=
-309,2+0,8-3,75+12,15=
-312,95+12,95=-300
D) -{-[-(4)-2½]-(-7}+[-(-3,2)-4⅕]+0,75 =
-{-[-6i1/2]+7}+[3,2-4,2]+0,75=
-[13i1/2]-1+0,75=
-14,5+0,75=-13,75