Whakaoti i te 157/10-24/10+61/10

$$15 \frac { 7 } { 10 } - 2 \frac { 4 } { 10 } + 6 \frac { 1 } { 10 }$$

Aromātai

$$\frac{97}{5}=19.4$$

Ngā Upane Otinga

Whakareatia te 15 ki te 10, ka 150.

$$\frac{150+7}{10}-\frac{2\times 10+4}{10}+\frac{6\times 10+1}{10}$$

Tāpirihia te 150 ki te 7, ka 157.

$$\frac{157}{10}-\frac{2\times 10+4}{10}+\frac{6\times 10+1}{10}$$

Whakareatia te 2 ki te 10, ka 20.

$$\frac{157}{10}-\frac{20+4}{10}+\frac{6\times 10+1}{10}$$

Tāpirihia te 20 ki te 4, ka 24.

$$\frac{157}{10}-\frac{24}{10}+\frac{6\times 10+1}{10}$$

Tā te mea he rite te tauraro o \frac{157}{10} me \frac{24}{10}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{157-24}{10}+\frac{6\times 10+1}{10}$$

Tangohia te 24 i te 157, ka 133.

$$\frac{133}{10}+\frac{6\times 10+1}{10}$$

Whakareatia te 6 ki te 10, ka 60.

$$\frac{133}{10}+\frac{60+1}{10}$$

Tāpirihia te 60 ki te 1, ka 61.

$$\frac{133}{10}+\frac{61}{10}$$

Tā te mea he rite te tauraro o \frac{133}{10} me \frac{61}{10}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{133+61}{10}$$

Tāpirihia te 133 ki te 61, ka 194.

$$\frac{194}{10}$$

Whakahekea te hautanga \frac{194}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{97}{5}$$

Tauwehe

$$\frac{97}{5} = 19\frac{2}{5} = 19.4$$