Whakaoti i te 21div(13/4*22/9)

$$21 \div ( 1 \frac { 3 } { 4 } \times 2 \frac { 2 } { 9 } )$$

Aromātai

$$\frac{27}{5}=5.4$$

Ngā Upane Otinga

Whakareatia te 1 ki te 4, ka 4.

$$\frac{21}{\frac{4+3}{4}\times \frac{2\times 9+2}{9}}$$

Tāpirihia te 4 ki te 3, ka 7.

$$\frac{21}{\frac{7}{4}\times \frac{2\times 9+2}{9}}$$

Whakareatia te 2 ki te 9, ka 18.

$$\frac{21}{\frac{7}{4}\times \frac{18+2}{9}}$$

Tāpirihia te 18 ki te 2, ka 20.

$$\frac{21}{\frac{7}{4}\times \frac{20}{9}}$$

Me whakarea te \frac{7}{4} ki te \frac{20}{9} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{21}{\frac{7\times 20}{4\times 9}}$$

Mahia ngā whakarea i roto i te hautanga \frac{7\times 20}{4\times 9}.

$$\frac{21}{\frac{140}{36}}$$

Whakahekea te hautanga \frac{140}{36} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.

$$\frac{21}{\frac{35}{9}}$$

Whakawehe 21 ki te \frac{35}{9} mā te whakarea 21 ki te tau huripoki o \frac{35}{9}.

$$21\times \frac{9}{35}$$

Tuhia te 21\times \frac{9}{35} hei hautanga kotahi.

$$\frac{21\times 9}{35}$$

Whakareatia te 21 ki te 9, ka 189.

$$\frac{189}{35}$$

Whakahekea te hautanga \frac{189}{35} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 7.

$$\frac{27}{5}$$

Tauwehe

$$\frac{3 ^ {3}}{5} = 5\frac{2}{5} = 5.4$$