oblicz :
a) ( 5/6 - 15/36) + (44/48 - 15/18) =
b) ( 9 11/40 - 7 6/25) + ( 2 16/25 - 1 11/20)=
prosze potrzebne na dziś
daje naj :)
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a) ( 5/6 - 15/36) + (44/48 - 15/18) =
(30/36-15/36)+(11/12-5/6)=
15/36+(11/12-10/12)= skracamy
5/12+1/12=
6/12=
1/2
b) ( 9 11/40 - 7 6/25) + ( 2 16/25 - 1 11/20)=
(9 275/1000-7 240/1000)+ (2 64/100-1 55/100)=zamieniam na ułamek dziesiętny
(9,275-7,24)+(2,64-1,55)=
2,035+1,09=
3,125 a to jest 3 1/8