Whakaoti i te 2.5/4.5=7.5/x

$$\frac { 2.5 } { 4.5 } = \frac { 7.5 } { x }$$

Whakaoti mō x

$$x=13.5$$

Ngā Upane mō te Whakaoti Whārite Rārangi

Tē taea kia ōrite te tāupe x ki 0 nā te kore tautuhi i te whakawehenga mā te kore. Whakareatia ngā taha e rua o te whārite ki te x.

$$x\times \frac{2.5}{4.5}=7.5$$

Whakarohaina te \frac{2.5}{4.5} mā te whakarea i te taurunga me te tauraro ki te 10.

$$x\times \frac{25}{45}=7.5$$

Whakahekea te hautanga \frac{25}{45} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$x\times \frac{5}{9}=7.5$$

Me whakarea ngā taha e rua ki te \frac{9}{5}, te tau utu o \frac{5}{9}.

$$x=7.5\times \frac{9}{5}$$

Me tahuri ki tau ā-ira 7.5 ki te hautau \frac{75}{10}. Whakahekea te hautanga \frac{75}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$x=\frac{15}{2}\times \frac{9}{5}$$

Me whakarea te \frac{15}{2} ki te \frac{9}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$x=\frac{15\times 9}{2\times 5}$$

Mahia ngā whakarea i roto i te hautanga \frac{15\times 9}{2\times 5}.

$$x=\frac{135}{10}$$

Whakahekea te hautanga \frac{135}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$x=\frac{27}{2}$$