Whakaoti i te x+(253-x)*0.7=0.7777

$$x+(253-x) \times 0.7=0.7777$$

Whakaoti mō x

$$x=-587.741$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakamahia te āhuatanga tohatoha hei whakarea te 253-x ki te 0.7.

$$x+177.1-0.7x=0.7777$$

Pahekotia te x me -0.7x, ka 0.3x.

$$0.3x+177.1=0.7777$$

Tangohia te 177.1 mai i ngā taha e rua.

$$0.3x=0.7777-177.1$$

Tangohia te 177.1 i te 0.7777, ka -176.3223.

$$0.3x=-176.3223$$

Whakawehea ngā taha e rua ki te 0.3.

$$x=\frac{-176.3223}{0.3}$$

Whakarohaina te \frac{-176.3223}{0.3} mā te whakarea i te taurunga me te tauraro ki te 10000.

$$x=\frac{-1763223}{3000}$$

Whakahekea te hautanga \frac{-1763223}{3000} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$x=-\frac{587741}{1000}$$