Whakaoti i te 71/30-85/6

$$7 \frac { 1 } { 30 } - 8 \frac { 5 } { 6 }$$

Aromātai

$$-\frac{9}{5}=-1.8$$

Ngā Upane Otinga

Whakareatia te 7 ki te 30, ka 210.

$$\frac{210+1}{30}-\frac{8\times 6+5}{6}$$

Tāpirihia te 210 ki te 1, ka 211.

$$\frac{211}{30}-\frac{8\times 6+5}{6}$$

Whakareatia te 8 ki te 6, ka 48.

$$\frac{211}{30}-\frac{48+5}{6}$$

Tāpirihia te 48 ki te 5, ka 53.

$$\frac{211}{30}-\frac{53}{6}$$

Ko te maha noa iti rawa atu o 30 me 6 ko 30. Me tahuri \frac{211}{30} me \frac{53}{6} ki te hautau me te tautūnga 30.

$$\frac{211}{30}-\frac{265}{30}$$

Tā te mea he rite te tauraro o \frac{211}{30} me \frac{265}{30}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{211-265}{30}$$

Tangohia te 265 i te 211, ka -54.

$$\frac{-54}{30}$$

Whakahekea te hautanga \frac{-54}{30} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 6.

$$-\frac{9}{5}$$

Tauwehe

$$-\frac{9}{5} = -1\frac{4}{5} = -1.8$$