Whakaoti i te 19/4*42/25

$$\frac{ 19 }{ 4 } \times 4 \frac{ 2 }{ 25 }$$

Aromātai

$$\frac{969}{50}=19.38$$

Ngā Upane Otinga

Whakareatia te 4 ki te 25, ka 100.

$$\frac{19}{4}\times \frac{100+2}{25}$$

Tāpirihia te 100 ki te 2, ka 102.

$$\frac{19}{4}\times \frac{102}{25}$$

Me whakarea te \frac{19}{4} ki te \frac{102}{25} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{19\times 102}{4\times 25}$$

Mahia ngā whakarea i roto i te hautanga \frac{19\times 102}{4\times 25}.

$$\frac{1938}{100}$$

Whakahekea te hautanga \frac{1938}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{969}{50}$$

Tauwehe

$$\frac{3 \cdot 17 \cdot 19}{2 \cdot 5 ^ {2}} = 19\frac{19}{50} = 19.38$$