Whakaoti i te 21/6+(-0.4)=

$$2 \frac { 1 } { 6 } + ( - 0.4 ) =$$

Aromātai

$$\frac{53}{30}\approx 1.766666667$$

Ngā Upane Otinga

Whakareatia te 2 ki te 6, ka 12.

$$\frac{12+1}{6}-0.4$$

Tāpirihia te 12 ki te 1, ka 13.

$$\frac{13}{6}-0.4$$

Me tahuri ki tau ā-ira 0.4 ki te hautau \frac{4}{10}. Whakahekea te hautanga \frac{4}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{13}{6}-\frac{2}{5}$$

Ko te maha noa iti rawa atu o 6 me 5 ko 30. Me tahuri \frac{13}{6} me \frac{2}{5} ki te hautau me te tautūnga 30.

$$\frac{65}{30}-\frac{12}{30}$$

Tā te mea he rite te tauraro o \frac{65}{30} me \frac{12}{30}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{65-12}{30}$$

Tangohia te 12 i te 65, ka 53.

$$\frac{53}{30}$$

Tauwehe

$$\frac{53}{2 \cdot 3 \cdot 5} = 1\frac{23}{30} = 1.7666666666666666$$