Przykład C
1] [tex]x-\frac{1}{2}x=(1-\frac{1}{2})\cdot x= \frac{1}{2}\cdot x=\frac{x}{2}[/tex]
2] [tex]x-\frac{1}{3}x=(1-\frac{1}{3})\cdot x= \frac{2}{3}\cdot x=\frac{2x}{3}[/tex]
3] [tex]x-\frac{3}{4}x=(1-\frac{3}{4})\cdot x= \frac{1}{4}\cdot x=\frac{x}{4}[/tex]
4] [tex]x-0,6x=(1-0,6)\cdot x=0,4\cdot x=0,4x[/tex]
5] [tex]x-0,85x=(1-0,85)\cdot x =0,15\cdot x=0,15x[/tex]
Przykład D
1] [tex]5x-x=(5-1)\cdotx=4\cdot x=4x[/tex]
2] [tex]3x-0,5x=(3-0,5)\cdot x=2,5\cdot x=2,5x[/tex]
3] [tex]5x-\frac{2}{5}x=(5-\frac{2}{5})\cdot x=(5-0,4)\cdot x=4,6x[/tex]
4] [tex]1,8x-1,2x=(1,8-1,2)\cdot x=0,6\cdot x=0,6x[/tex]
5] [tex]20x-10,5x=(20-10,5)\cdot x=9,5\cdot x=9,5x[/tex]