Whakaoti i te 43/10-21/8

$$4 \frac { 3 } { 10 } - 2 \frac { 1 } { 8 }$$

Aromātai

$$\frac{87}{40}=2.175$$

Ngā Upane Otinga

Whakareatia te 4 ki te 10, ka 40.

$$\frac{40+3}{10}-\frac{2\times 8+1}{8}$$

Tāpirihia te 40 ki te 3, ka 43.

$$\frac{43}{10}-\frac{2\times 8+1}{8}$$

Whakareatia te 2 ki te 8, ka 16.

$$\frac{43}{10}-\frac{16+1}{8}$$

Tāpirihia te 16 ki te 1, ka 17.

$$\frac{43}{10}-\frac{17}{8}$$

Ko te maha noa iti rawa atu o 10 me 8 ko 40. Me tahuri \frac{43}{10} me \frac{17}{8} ki te hautau me te tautūnga 40.

$$\frac{172}{40}-\frac{85}{40}$$

Tā te mea he rite te tauraro o \frac{172}{40} me \frac{85}{40}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{172-85}{40}$$

Tangohia te 85 i te 172, ka 87.

$$\frac{87}{40}$$

Tauwehe

$$\frac{3 \cdot 29}{2 ^ {3} \cdot 5} = 2\frac{7}{40} = 2.175$$