Whakaoti i te x/1.3=4/0.39

$$\frac { x } { 1.3 } = \frac { 4 } { 0.39 }$$

Whakaoti mō x

$$x = \frac{40}{3} = 13\frac{1}{3} \approx 13.333333333$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Whakarohaina te \frac{4}{0.39} mā te whakarea i te taurunga me te tauraro ki te 100.

$$\frac{x}{1.3}=\frac{400}{39}$$

Me whakarea ngā taha e rua ki te 1.3.

$$x=\frac{400}{39}\times 1.3$$

Me tahuri ki tau ā-ira 1.3 ki te hautau \frac{13}{10}.

$$x=\frac{400}{39}\times \frac{13}{10}$$

Me whakarea te \frac{400}{39} ki te \frac{13}{10} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$x=\frac{400\times 13}{39\times 10}$$

Mahia ngā whakarea i roto i te hautanga \frac{400\times 13}{39\times 10}.

$$x=\frac{5200}{390}$$

Whakahekea te hautanga \frac{5200}{390} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 130.

$$x=\frac{40}{3}$$