Whakaoti i te 3/8-7/9+5/72

$$\frac { 3 } { 8 } - \frac { 7 } { 9 } + \frac { 5 } { 72 }$$

Aromātai

$$-\frac{1}{3}\approx -0.333333333$$

Ngā Upane Otinga

Ko te maha noa iti rawa atu o 8 me 9 ko 72. Me tahuri \frac{3}{8} me \frac{7}{9} ki te hautau me te tautūnga 72.

$$\frac{27}{72}-\frac{56}{72}+\frac{5}{72}$$

Tā te mea he rite te tauraro o \frac{27}{72} me \frac{56}{72}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{27-56}{72}+\frac{5}{72}$$

Tangohia te 56 i te 27, ka -29.

$$-\frac{29}{72}+\frac{5}{72}$$

Tā te mea he rite te tauraro o -\frac{29}{72} me \frac{5}{72}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{-29+5}{72}$$

Tāpirihia te -29 ki te 5, ka -24.

$$\frac{-24}{72}$$

Whakahekea te hautanga \frac{-24}{72} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 24.

$$-\frac{1}{3}$$

Tauwehe

$$-\frac{1}{3} = -0.3333333333333333$$