Whakaoti i te 3/8-7/4+2/16

$$\frac { 3 } { 8 } - \frac { 7 } { 4 } + \frac { 2 } { 16 }$$

Aromātai

$$-\frac{5}{4}=-1.25$$

Ngā Upane Otinga

Ko te maha noa iti rawa atu o 8 me 4 ko 8. Me tahuri \frac{3}{8} me \frac{7}{4} ki te hautau me te tautūnga 8.

$$\frac{3}{8}-\frac{14}{8}+\frac{2}{16}$$

Tā te mea he rite te tauraro o \frac{3}{8} me \frac{14}{8}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{3-14}{8}+\frac{2}{16}$$

Tangohia te 14 i te 3, ka -11.

$$-\frac{11}{8}+\frac{2}{16}$$

Whakahekea te hautanga \frac{2}{16} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$-\frac{11}{8}+\frac{1}{8}$$

Tā te mea he rite te tauraro o -\frac{11}{8} me \frac{1}{8}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{-11+1}{8}$$

Tāpirihia te -11 ki te 1, ka -10.

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

Whakahekea te hautanga \frac{-10}{8} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$-\frac{5}{4}$$

Tauwehe

$$-\frac{5}{4} = -1\frac{1}{4} = -1.25$$