Hjelp meg å regne ut d her! Sikkert kjempeenkelt, men husker ikke helt hvordan rekkefølge man skal regne ut.... ;)
d) 27(1- 1/3)(2+1/3)
og denne:
c) (1+2/5):(3-1/5)
Vil være evig takknemlig!
Meme exercice... Regn sammen... Hjelp?
Moderatorer: Aleks855, Gustav, Nebuchadnezzar, Janhaa, DennisChristensen, Emilga
d) 27(1- 1/3)(2+1/3)= [tex]27*((3-1)/3)*((6+1)/3)= 27*(2/3)*(7/3)= ((27*2*7)/3*3)=378/9=42[/tex]
c) (1+2/5) / (3-1/5)=[tex][(5/5)+(2/5)] / [(15/5)-(1/5)]=[(5+2)/5] / [(15-1)/5]= (7/5) / (14/5) = (7/5)*(5/14)= (7*5) / (5*14) = 35/70 = 7/14 = 1/2[/tex]
c) (1+2/5) / (3-1/5)=[tex][(5/5)+(2/5)] / [(15/5)-(1/5)]=[(5+2)/5] / [(15-1)/5]= (7/5) / (14/5) = (7/5)*(5/14)= (7*5) / (5*14) = 35/70 = 7/14 = 1/2[/tex]