zad. 11
a)10-5/7=9 7/7-5/7=9 2/7
b)3 1/13-5/13=2 14/13-5/13=2 9/13
A)
[tex]10 - \frac{5}{7} = \frac{70}{7} - \frac{5}{7} = \frac{65}{7} [/tex]
B)
[tex]3 \frac{1}{13} - \frac{5}{13} = \frac{39}{13} - \frac{5}{13} = \frac{34}{13} [/tex]
