a)
[tex] \frac{2}{4} + \frac{3}{6} = \frac{6}{12} + \frac{6}{12} = \frac{12}{12} = 1[/tex]
b)
[tex] \frac{1}{5} + \frac{2}{4} + \frac{3}{2} = \frac{4}{20} + \frac{10}{20} + \frac{30}{20} = \frac{44}{20} \div 4 = \frac{11}{5} [/tex]
c)
[tex] \frac{6}{8} - \frac{2}{3} = \frac{18}{24} - \frac{16}{24} = \frac{2}{24} \div 2 = \frac{1}{12} [/tex]
2) a)
0,5 + 2/6
0,5+0,334
0,834
b)
0,8+4/3
0,8+1,334
2,134
c)
3×6/3
18/3
6
d)
4×2,8
11,2
