Autorzy:Wojciech Babiański, Lech Chańko, Dorota Ponczek
Wydawnictwo:Nowa Era
Rok wydania:2015
Oblicz4.8 gwiazdek na podstawie 5 opinii

`a)\ (2 1/6)/(1 4/9)=2 1/6:1 4/9=` `13/6:13/9=` `strike13^1/6*9/strike13^1=` `9/6=3/2=1 1/2` 

 

`b)\ (1/2+1/3)/(1/2)=` `(3/6+2/6)/(3/6)=` `5/6:3/6=5/strike6^1*strike6^1/3=` `5/3=1 2/3` 

 

`c)\ (1 5/12)/(1/2-1/3)=` `(17/12)/(6/12-4/12)=` `(17/12)/(2/12)=` `17/12:2/12=` `17/strike12^1*strike12^1/2=` `17/2=8 1/2` 

 

`d)\ (2-1/3)/(2-1/2)=(1 2/3)/(1 1/2)=` `(5/3)/(3/2)=` `5/3:3/2=` `5/3*2/3=10/9=1 1/9` 

 

`e)\ (3/4+1/8)/(3/4-1/8)=` `(6/8+1/8)/(6/8-1/8)=` `(7/8)/(5/8)=` `7/8:5/8=7/strike8^1*strike8^1/5=` `7/5=1 2/5` 

 

`f)\ (1/2-1 2/5)/(1/2-1 1/5)=` `(5/10-1 4/10)/(5/10-1 2/10)=` `(5/10-14/10)/(5/10-12/10)=` `(-9/10)/(-7/10)=` `-9/10:(-7/10)=` 

`\ \ \ =-9/strike10^1*(-strike10^1/7)=` `9/7=1 2/7` 

 

`g)\ (2 1/4-3 1/2)/(1/8+1/2)=` `(2 1/4-3 2/4)/(1/8+4/8)=` `(-(3 2/4-2 1/4))/(5/8)=` `(-1 1/4)/(5/8)=` 

`\ \ \ =(-5/4)/(5/8)=` `-5/4:5/8=` `-strike5^1/4*8/strike5^1=` `-8/4=-2` 

 

`h)\ (3 1/2-strike2^1*3/strike4^2)/(2 1/2*2/5-2)=` `(3 1/2-3/2)/(5/2*2/5-2)=` `(3 1/2-1 1/2)/(1-2)=` `2/(-1)=-2`        

 

`i)\ (2 3/4:1/7-22)/(6-(-5))=(11/4*7/1-22)/(6+5)=(77/4-22)/11=(77/4-22):11=7/4-2=1 3/4-2=-1/4`