Whakaoti i te 21/5+13/8

$$2 \frac { 1 } { 5 } + 1 \frac { 3 } { 8 }$$

Aromātai

$$\frac{143}{40}=3.575$$

Ngā Upane Otinga

Whakareatia te 2 ki te 5, ka 10.

$$\frac{10+1}{5}+\frac{1\times 8+3}{8}$$

Tāpirihia te 10 ki te 1, ka 11.

$$\frac{11}{5}+\frac{1\times 8+3}{8}$$

Whakareatia te 1 ki te 8, ka 8.

$$\frac{11}{5}+\frac{8+3}{8}$$

Tāpirihia te 8 ki te 3, ka 11.

$$\frac{11}{5}+\frac{11}{8}$$

Ko te maha noa iti rawa atu o 5 me 8 ko 40. Me tahuri \frac{11}{5} me \frac{11}{8} ki te hautau me te tautūnga 40.

$$\frac{88}{40}+\frac{55}{40}$$

Tā te mea he rite te tauraro o \frac{88}{40} me \frac{55}{40}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{88+55}{40}$$

Tāpirihia te 88 ki te 55, ka 143.

$$\frac{143}{40}$$

Tauwehe

$$\frac{11 \cdot 13}{2 ^ {3} \cdot 5} = 3\frac{23}{40} = 3.575$$