I. sposób:
[tex](1+\frac{1}{2}):2 = 1:2 + \frac{1}{2}:2 = \frac{1}{2}+\frac{1}{2}\cdot\frac{1}{2} = \frac{1}{2}+\frac{1}{4} = \frac{2}{4}+\frac{1}{4} = \frac{3}{4}[/tex]
II. sposób:
[tex]1\frac{1}{2}:2 = \frac{1\cdot2+1}{2}:2 = \frac{3}{2}\cdot\frac{1}{2} = \frac{3}{4}[/tex]