Whakaoti i te 2(400-600x)-65*2=2-200x-15

$$2 ( 400 - 600 x ) - 65 \times 2 = 2 - 200 x - 15$$

Whakaoti mō x

$$x=\frac{683}{1000}=0.683$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 2 ki te 400-600x.

$$800-1200x-65\times 2=2-200x-15$$

Whakareatia te 65 ki te 2, ka 130.

$$800-1200x-130=2-200x-15$$

Tangohia te 130 i te 800, ka 670.

$$670-1200x=2-200x-15$$

Tangohia te 15 i te 2, ka -13.

$$670-1200x=-13-200x$$

Me tāpiri te 200x ki ngā taha e rua.

$$670-1200x+200x=-13$$

Pahekotia te -1200x me 200x, ka -1000x.

$$670-1000x=-13$$

Tangohia te 670 mai i ngā taha e rua.

$$-1000x=-13-670$$

Tangohia te 670 i te -13, ka -683.

$$-1000x=-683$$

Whakawehea ngā taha e rua ki te -1000.

$$x=\frac{-683}{-1000}$$

Ka taea te hautanga \frac{-683}{-1000} te whakamāmā ki te \frac{683}{1000} mā te tango tahi i te tohu tōraro i te taurunga me te tauraro.

$$x=\frac{683}{1000}$$