Whakaoti i te 80(10)+120(x)+500(2/3(12))-35000=0

$$80(10)+120(x)+500( \frac{ 2 }{ 3 } (12))-35000=0$$

Whakaoti mō x

$$x = \frac{755}{3} = 251\frac{2}{3} \approx 251.666666667$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 80 ki te 10, ka 800.

$$800+120x+500\times \frac{2}{3}\times 12-35000=0$$

Tuhia te 500\times \frac{2}{3} hei hautanga kotahi.

$$800+120x+\frac{500\times 2}{3}\times 12-35000=0$$

Whakareatia te 500 ki te 2, ka 1000.

$$800+120x+\frac{1000}{3}\times 12-35000=0$$

Tuhia te \frac{1000}{3}\times 12 hei hautanga kotahi.

$$800+120x+\frac{1000\times 12}{3}-35000=0$$

Whakareatia te 1000 ki te 12, ka 12000.

$$800+120x+\frac{12000}{3}-35000=0$$

Whakawehea te 12000 ki te 3, kia riro ko 4000.

$$800+120x+4000-35000=0$$

Tāpirihia te 800 ki te 4000, ka 4800.

$$4800+120x-35000=0$$

Tangohia te 35000 i te 4800, ka -30200.

$$-30200+120x=0$$

Me tāpiri te 30200 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.

$$120x=30200$$

Whakawehea ngā taha e rua ki te 120.

$$x=\frac{30200}{120}$$

Whakahekea te hautanga \frac{30200}{120} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 40.

$$x=\frac{755}{3}$$