Whakaoti i te 0.9x+0.8y=825

$$0.9 x + 0.8 y = 825$$

Whakaoti mō x

$$x=-\frac{8y}{9}+\frac{2750}{3}$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te 0.8y mai i ngā taha e rua.

$$0.9x=825-0.8y$$

He hanga arowhānui tō te whārite.

$$0.9x=-\frac{4y}{5}+825$$

Whakawehea ngā taha e rua o te whārite ki te 0.9, he ōrite ki te whakarea i ngā taha e rua ki te tau huripoki o te hautanga.

$$\frac{0.9x}{0.9}=\frac{-\frac{4y}{5}+825}{0.9}$$

Mā te whakawehe ki te 0.9 ka wetekia te whakareanga ki te 0.9.

$$x=\frac{-\frac{4y}{5}+825}{0.9}$$

Whakawehe 825-\frac{4y}{5} ki te 0.9 mā te whakarea 825-\frac{4y}{5} ki te tau huripoki o 0.9.

$$x=-\frac{8y}{9}+\frac{2750}{3}$$

Whakaoti mō y

$$y=-\frac{9x}{8}+1031.25$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tangohia te 0.9x mai i ngā taha e rua.

$$0.8y=825-0.9x$$

He hanga arowhānui tō te whārite.

$$0.8y=-\frac{9x}{10}+825$$

Whakawehea ngā taha e rua o te whārite ki te 0.8, he ōrite ki te whakarea i ngā taha e rua ki te tau huripoki o te hautanga.

$$\frac{0.8y}{0.8}=\frac{-\frac{9x}{10}+825}{0.8}$$

Mā te whakawehe ki te 0.8 ka wetekia te whakareanga ki te 0.8.

$$y=\frac{-\frac{9x}{10}+825}{0.8}$$

Whakawehe 825-\frac{9x}{10} ki te 0.8 mā te whakarea 825-\frac{9x}{10} ki te tau huripoki o 0.8.

$$y=-\frac{9x}{8}+\frac{4125}{4}$$