Whakaoti i te 80(15)+120(x)+500(2/3(15))-35000=0

$$80(15)+120(x)+500( \frac{ 2 }{ 3 } (15))-35000=0$$

Whakaoti mō x

$$x=240$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 80 ki te 15, ka 1200.

$$1200+120x+500\times \frac{2}{3}\times 15-35000=0$$

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

$$1200+120x+\frac{500\times 2}{3}\times 15-35000=0$$

Whakareatia te 500 ki te 2, ka 1000.

$$1200+120x+\frac{1000}{3}\times 15-35000=0$$

Tuhia te \frac{1000}{3}\times 15 hei hautanga kotahi.

$$1200+120x+\frac{1000\times 15}{3}-35000=0$$

Whakareatia te 1000 ki te 15, ka 15000.

$$1200+120x+\frac{15000}{3}-35000=0$$

Whakawehea te 15000 ki te 3, kia riro ko 5000.

$$1200+120x+5000-35000=0$$

Tāpirihia te 1200 ki te 5000, ka 6200.

$$6200+120x-35000=0$$

Tangohia te 35000 i te 6200, ka -28800.

$$-28800+120x=0$$

Me tāpiri te 28800 ki ngā taha e rua. Ko te tau i tāpiria he kore ka hua koia tonu.

$$120x=28800$$

Whakawehea ngā taha e rua ki te 120.

$$x=\frac{28800}{120}$$

Whakawehea te 28800 ki te 120, kia riro ko 240.

$$x=240$$