Whakaoti i te -3I_{A}+2I_{B}+I_{C}=-9

$$- 3 I _ { A } + 2 I _ { B } + I _ { C } = - 9$$

Whakaoti mō I_A

$$I_{A}=\frac{2I_{B}+I_{C}+9}{3}$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te 2I_{B} mai i ngā taha e rua.

$$-3I_{A}+I_{C}=-9-2I_{B}$$

Tangohia te I_{C} mai i ngā taha e rua.

$$-3I_{A}=-9-2I_{B}-I_{C}$$

He hanga arowhānui tō te whārite.

$$-3I_{A}=-2I_{B}-I_{C}-9$$

Whakawehea ngā taha e rua ki te -3.

$$\frac{-3I_{A}}{-3}=\frac{-2I_{B}-I_{C}-9}{-3}$$

Mā te whakawehe ki te -3 ka wetekia te whakareanga ki te -3.

$$I_{A}=\frac{-2I_{B}-I_{C}-9}{-3}$$

Whakawehe -9-2I_{B}-I_{C} ki te -3.

$$I_{A}=\frac{I_{C}}{3}+\frac{2I_{B}}{3}+3$$

Whakaoti mō I_B

$$I_{B}=\frac{3I_{A}-I_{C}-9}{2}$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Me tāpiri te 3I_{A} ki ngā taha e rua.

$$2I_{B}+I_{C}=-9+3I_{A}$$

Tangohia te I_{C} mai i ngā taha e rua.

$$2I_{B}=-9+3I_{A}-I_{C}$$

He hanga arowhānui tō te whārite.

$$2I_{B}=3I_{A}-I_{C}-9$$

Whakawehea ngā taha e rua ki te 2.

$$\frac{2I_{B}}{2}=\frac{3I_{A}-I_{C}-9}{2}$$

Mā te whakawehe ki te 2 ka wetekia te whakareanga ki te 2.

$$I_{B}=\frac{3I_{A}-I_{C}-9}{2}$$