Whakaoti i te 27/12+(-23/10)

$$2 \frac { 7 } { 12 } + ( - 2 \frac { 3 } { 10 } )$$

Aromātai

$$\frac{17}{60}\approx 0.283333333$$

Ngā Upane Otinga

Whakareatia te 2 ki te 12, ka 24.

$$\frac{24+7}{12}-\frac{2\times 10+3}{10}$$

Tāpirihia te 24 ki te 7, ka 31.

$$\frac{31}{12}-\frac{2\times 10+3}{10}$$

Whakareatia te 2 ki te 10, ka 20.

$$\frac{31}{12}-\frac{20+3}{10}$$

Tāpirihia te 20 ki te 3, ka 23.

$$\frac{31}{12}-\frac{23}{10}$$

Ko te maha noa iti rawa atu o 12 me 10 ko 60. Me tahuri \frac{31}{12} me \frac{23}{10} ki te hautau me te tautūnga 60.

$$\frac{155}{60}-\frac{138}{60}$$

Tā te mea he rite te tauraro o \frac{155}{60} me \frac{138}{60}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{155-138}{60}$$

Tangohia te 138 i te 155, ka 17.

$$\frac{17}{60}$$

Tauwehe

$$\frac{17}{2 ^ {2} \cdot 3 \cdot 5} = 0.2833333333333333$$