Whakaoti i te {l}{2x+1=y}{y+x=y}

$$\left. \begin{array} { l } { 2 x + 1 = y } \\ { y + x = y } \end{array} \right.$$

Whakaoti mō x, y

$$x=0$$

$$y=1$$

Ngā Upane Otinga

Whakaarohia te whārite tuatahi. Tangohia te y mai i ngā taha e rua.

$$2x+1-y=0$$

Tangohia te 1 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.

$$2x-y=-1$$

Whakaarohia te whārite tuarua. Tangohia te y mai i ngā taha e rua.

$$y+x-y=0$$

Pahekotia te y me -y, ka 0.

$$x=0$$

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

$$2\times 0-y=-1$$

Whakareatia te 2 ki te 0, ka 0.

$$0-y=-1$$

Ko te tau i tāpiria he kore ka hua koia tonu.

$$-y=-1$$

Whakawehea ngā taha e rua ki te -1.

$$y=\frac{-1}{-1}$$

Whakawehea te -1 ki te -1, kia riro ko 1.

$$y=1$$

Kua oti te pūnaha te whakatau.

$$x=0 y=1$$