Whakaoti i te 31/4-{5/8+(21/2-3/4)}

$$3 \frac { 1 } { 4 } - \{ \frac { 5 } { 8 } + ( 2 \frac { 1 } { 2 } - \frac { 3 } { 4 } ) \}$$

Aromātai

$$\frac{7}{8}=0.875$$

Ngā Upane Otinga

Whakareatia te 3 ki te 4, ka 12.

$$\frac{12+1}{4}-\left(\frac{5}{8}+\frac{2\times 2+1}{2}-\frac{3}{4}\right)$$

Tāpirihia te 12 ki te 1, ka 13.

$$\frac{13}{4}-\left(\frac{5}{8}+\frac{2\times 2+1}{2}-\frac{3}{4}\right)$$

Whakareatia te 2 ki te 2, ka 4.

$$\frac{13}{4}-\left(\frac{5}{8}+\frac{4+1}{2}-\frac{3}{4}\right)$$

Tāpirihia te 4 ki te 1, ka 5.

$$\frac{13}{4}-\left(\frac{5}{8}+\frac{5}{2}-\frac{3}{4}\right)$$

Ko te maha noa iti rawa atu o 8 me 2 ko 8. Me tahuri \frac{5}{8} me \frac{5}{2} ki te hautau me te tautūnga 8.

$$\frac{13}{4}-\left(\frac{5}{8}+\frac{20}{8}-\frac{3}{4}\right)$$

Tā te mea he rite te tauraro o \frac{5}{8} me \frac{20}{8}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{13}{4}-\left(\frac{5+20}{8}-\frac{3}{4}\right)$$

Tāpirihia te 5 ki te 20, ka 25.

$$\frac{13}{4}-\left(\frac{25}{8}-\frac{3}{4}\right)$$

Ko te maha noa iti rawa atu o 8 me 4 ko 8. Me tahuri \frac{25}{8} me \frac{3}{4} ki te hautau me te tautūnga 8.

$$\frac{13}{4}-\left(\frac{25}{8}-\frac{6}{8}\right)$$

Tā te mea he rite te tauraro o \frac{25}{8} me \frac{6}{8}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{13}{4}-\frac{25-6}{8}$$

Tangohia te 6 i te 25, ka 19.

$$\frac{13}{4}-\frac{19}{8}$$

Ko te maha noa iti rawa atu o 4 me 8 ko 8. Me tahuri \frac{13}{4} me \frac{19}{8} ki te hautau me te tautūnga 8.

$$\frac{26}{8}-\frac{19}{8}$$

Tā te mea he rite te tauraro o \frac{26}{8} me \frac{19}{8}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{26-19}{8}$$

Tangohia te 19 i te 26, ka 7.

$$\frac{7}{8}$$

Tauwehe

$$\frac{7}{2 ^ {3}} = 0.875$$