Whakaoti i te 4/12-9/7

$$\frac{ 4 }{ 12 } - \frac{ 9 }{ 7 }$$

Aromātai

$$-\frac{20}{21}\approx -0.952380952$$

Ngā Upane Otinga

Whakahekea te hautanga \frac{4}{12} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.

$$\frac{1}{3}-\frac{9}{7}$$

Ko te maha noa iti rawa atu o 3 me 7 ko 21. Me tahuri \frac{1}{3} me \frac{9}{7} ki te hautau me te tautūnga 21.

$$\frac{7}{21}-\frac{27}{21}$$

Tā te mea he rite te tauraro o \frac{7}{21} me \frac{27}{21}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{7-27}{21}$$

Tangohia te 27 i te 7, ka -20.

$$-\frac{20}{21}$$

Tauwehe

$$-\frac{20}{21} = -0.9523809523809523$$