Odpowiedź:
k) [tex]\frac{2}{3}-\frac{1}{10} = \frac{20}{30}-\frac{3}{30} =\frac{17}{30} \\ [/tex]
l) [tex]\frac{10}{11}-\frac{1}{2}=\frac{20}{22}-\frac{11}{22}=\frac{9}{22} [/tex]
k) 2/3 - 1/10 =
= 20/30 - 3/30=
= 17/30
l) 10/11 - 1/2 =
20/22 - 11/22 =
= 9/22
