Whakaoti i te -(2x-0.71)=0.9(1.4-x)

$$-(2x-0.71)=0.9(1.4-x)$$

Whakaoti mō x

$$x=-0.5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Hei kimi i te tauaro o 2x-0.71, kimihia te tauaro o ia taurangi.

$$-2x-\left(-0.71\right)=0.9\left(1.4-x\right)$$

Ko te tauaro o -0.71 ko 0.71.

$$-2x+0.71=0.9\left(1.4-x\right)$$

Whakamahia te āhuatanga tohatoha hei whakarea te 0.9 ki te 1.4-x.

$$-2x+0.71=1.26-0.9x$$

Me tāpiri te 0.9x ki ngā taha e rua.

$$-2x+0.71+0.9x=1.26$$

Pahekotia te -2x me 0.9x, ka -1.1x.

$$-1.1x+0.71=1.26$$

Tangohia te 0.71 mai i ngā taha e rua.

$$-1.1x=1.26-0.71$$

Tangohia te 0.71 i te 1.26, ka 0.55.

$$-1.1x=0.55$$

Whakawehea ngā taha e rua ki te -1.1.

$$x=\frac{0.55}{-1.1}$$

Whakarohaina te \frac{0.55}{-1.1} mā te whakarea i te taurunga me te tauraro ki te 100.

$$x=\frac{55}{-110}$$

Whakahekea te hautanga \frac{55}{-110} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 55.

$$x=-\frac{1}{2}$$