Whakaoti i te 5/12-5/28*0.7

$$\frac { 5 } { 12 } - \frac { 5 } { 28 } \times 0.7$$

Aromātai

$$\frac{7}{24}\approx 0.291666667$$

Ngā Upane Otinga

Me tahuri ki tau ā-ira 0.7 ki te hautau \frac{7}{10}.

$$\frac{5}{12}-\frac{5}{28}\times \frac{7}{10}$$

Me whakarea te \frac{5}{28} ki te \frac{7}{10} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{5}{12}-\frac{5\times 7}{28\times 10}$$

Mahia ngā whakarea i roto i te hautanga \frac{5\times 7}{28\times 10}.

$$\frac{5}{12}-\frac{35}{280}$$

Whakahekea te hautanga \frac{35}{280} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 35.

$$\frac{5}{12}-\frac{1}{8}$$

Ko te maha noa iti rawa atu o 12 me 8 ko 24. Me tahuri \frac{5}{12} me \frac{1}{8} ki te hautau me te tautūnga 24.

$$\frac{10}{24}-\frac{3}{24}$$

Tā te mea he rite te tauraro o \frac{10}{24} me \frac{3}{24}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{10-3}{24}$$

Tangohia te 3 i te 10, ka 7.

$$\frac{7}{24}$$

Tauwehe

$$\frac{7}{3 \cdot 2 ^ {3}} = 0.2916666666666667$$