Whakaoti i te 240*0.8-x=0.2x

$$240 \times 0.8-x=0.2x$$

Whakaoti mō x

$$x=160$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakareatia te 240 ki te 0.8, ka 192.

$$192-x=0.2x$$

Tangohia te 0.2x mai i ngā taha e rua.

$$192-x-0.2x=0$$

Pahekotia te -x me -0.2x, ka -1.2x.

$$192-1.2x=0$$

Tangohia te 192 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.

$$-1.2x=-192$$

Whakawehea ngā taha e rua ki te -1.2.

$$x=\frac{-192}{-1.2}$$

Whakarohaina te \frac{-192}{-1.2} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x=\frac{-1920}{-12}$$

Whakawehea te -1920 ki te -12, kia riro ko 160.

$$x=160$$