Whakaoti i te 23/5+12/3-7/15

$$2 \frac { 3 } { 5 } + 1 \frac { 2 } { 3 } - \frac { 7 } { 15 }$$

Aromātai

$$\frac{19}{5}=3.8$$

Ngā Upane Otinga

Whakareatia te 2 ki te 5, ka 10.

$$\frac{10+3}{5}+\frac{1\times 3+2}{3}-\frac{7}{15}$$

Tāpirihia te 10 ki te 3, ka 13.

$$\frac{13}{5}+\frac{1\times 3+2}{3}-\frac{7}{15}$$

Whakareatia te 1 ki te 3, ka 3.

$$\frac{13}{5}+\frac{3+2}{3}-\frac{7}{15}$$

Tāpirihia te 3 ki te 2, ka 5.

$$\frac{13}{5}+\frac{5}{3}-\frac{7}{15}$$

Ko te maha noa iti rawa atu o 5 me 3 ko 15. Me tahuri \frac{13}{5} me \frac{5}{3} ki te hautau me te tautūnga 15.

$$\frac{39}{15}+\frac{25}{15}-\frac{7}{15}$$

Tā te mea he rite te tauraro o \frac{39}{15} me \frac{25}{15}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{39+25}{15}-\frac{7}{15}$$

Tāpirihia te 39 ki te 25, ka 64.

$$\frac{64}{15}-\frac{7}{15}$$

Tā te mea he rite te tauraro o \frac{64}{15} me \frac{7}{15}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{64-7}{15}$$

Tangohia te 7 i te 64, ka 57.

$$\frac{57}{15}$$

Whakahekea te hautanga \frac{57}{15} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 3.

$$\frac{19}{5}$$

Tauwehe

$$\frac{19}{5} = 3\frac{4}{5} = 3.8$$