Whakaoti i te {l}{2x+5y=13}{5x-14=9}

$$\left. \begin{array} { l } { 2 x + 5 y = 13 } \\ { 5 x - 14 = 9 } \end{array} \right.$$

Whakaoti mō x, y

$$x = \frac{23}{5} = 4\frac{3}{5} = 4.6$$

$$y=\frac{19}{25}=0.76$$

Ngā Upane Otinga

Whakaarohia te whārite tuarua. Me tāpiri te 14 ki ngā taha e rua.

$$5x=9+14$$

Tāpirihia te 9 ki te 14, ka 23.

$$5x=23$$

Whakawehea ngā taha e rua ki te 5.

$$x=\frac{23}{5}$$

Whakaarohia te whārite tuatahi. Me kōkuhu ngā uara tāupe mōhiotia ki te whārite.

$$2\times \frac{23}{5}+5y=13$$

Whakareatia te 2 ki te \frac{23}{5}, ka \frac{46}{5}.

$$\frac{46}{5}+5y=13$$

Tangohia te \frac{46}{5} mai i ngā taha e rua.

$$5y=13-\frac{46}{5}$$

Tangohia te \frac{46}{5} i te 13, ka \frac{19}{5}.

$$5y=\frac{19}{5}$$

Whakawehea ngā taha e rua ki te 5.

$$y=\frac{\frac{19}{5}}{5}$$

Tuhia te \frac{\frac{19}{5}}{5} hei hautanga kotahi.

$$y=\frac{19}{5\times 5}$$

Whakareatia te 5 ki te 5, ka 25.

$$y=\frac{19}{25}$$

Kua oti te pūnaha te whakatau.

$$x=\frac{23}{5} y=\frac{19}{25}$$