Whakaoti i te {l}{3x-7y=-15}{4x-3x=6}

$$\left\{ \begin{array} { l } { 3 x - 7 y = - 15 } \\ { 4 x - 3 x = 6 } \end{array} \right.$$

Whakaoti mō x, y

$$x=6$$

$$y = \frac{33}{7} = 4\frac{5}{7} \approx 4.714285714$$

Ngā Upane Otinga

Whakaarohia te whārite tuarua. Pahekotia te 4x me -3x, ka x.

$$x=6$$

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

$$3\times 6-7y=-15$$

Whakareatia te 3 ki te 6, ka 18.

$$18-7y=-15$$

Tangohia te 18 mai i ngā taha e rua.

$$-7y=-15-18$$

Tangohia te 18 i te -15, ka -33.

$$-7y=-33$$

Whakawehea ngā taha e rua ki te -7.

$$y=\frac{-33}{-7}$$

Ka taea te hautanga \frac{-33}{-7} te whakamāmā ki te \frac{33}{7} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.

$$y=\frac{33}{7}$$

Kua oti te pūnaha te whakatau.

$$x=6 y=\frac{33}{7}$$