Whakaoti i te 0.2+40-x=x

$$0.2 + 40 - x = x$$

Whakaoti mō x

$$x=20.1$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tāpirihia te 0.2 ki te 40, ka 40.2.

$$40.2-x=x$$

Tangohia te x mai i ngā taha e rua.

$$40.2-x-x=0$$

Pahekotia te -x me -x, ka -2x.

$$40.2-2x=0$$

Tangohia te 40.2 mai i ngā taha e rua. Ko te tau i tango i te kore ka hua ko tōna korenga.

$$-2x=-40.2$$

Whakawehea ngā taha e rua ki te -2.

$$x=\frac{-40.2}{-2}$$

Whakarohaina te \frac{-40.2}{-2} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x=\frac{-402}{-20}$$

Whakahekea te hautanga \frac{-402}{-20} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te -2.

$$x=\frac{201}{10}$$