Whakaoti i te 1/2(7/2+7/5-14/4)

$$\frac { 1 } { 2 } ( \frac { 7 } { 2 } + \frac { 7 } { 5 } - \frac { 14 } { 4 } )$$

Aromātai

$$\frac{7}{10}=0.7$$

Ngā Upane Otinga

Ko te maha noa iti rawa atu o 2 me 5 ko 10. Me tahuri \frac{7}{2} me \frac{7}{5} ki te hautau me te tautūnga 10.

$$\frac{1}{2}\left(\frac{35}{10}+\frac{14}{10}-\frac{14}{4}\right)$$

Tā te mea he rite te tauraro o \frac{35}{10} me \frac{14}{10}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{1}{2}\left(\frac{35+14}{10}-\frac{14}{4}\right)$$

Tāpirihia te 35 ki te 14, ka 49.

$$\frac{1}{2}\left(\frac{49}{10}-\frac{14}{4}\right)$$

Whakahekea te hautanga \frac{14}{4} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{1}{2}\left(\frac{49}{10}-\frac{7}{2}\right)$$

Ko te maha noa iti rawa atu o 10 me 2 ko 10. Me tahuri \frac{49}{10} me \frac{7}{2} ki te hautau me te tautūnga 10.

$$\frac{1}{2}\left(\frac{49}{10}-\frac{35}{10}\right)$$

Tā te mea he rite te tauraro o \frac{49}{10} me \frac{35}{10}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{1}{2}\times \frac{49-35}{10}$$

Tangohia te 35 i te 49, ka 14.

$$\frac{1}{2}\times \frac{14}{10}$$

Whakahekea te hautanga \frac{14}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{1}{2}\times \frac{7}{5}$$

Me whakarea te \frac{1}{2} ki te \frac{7}{5} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{1\times 7}{2\times 5}$$

Mahia ngā whakarea i roto i te hautanga \frac{1\times 7}{2\times 5}.

$$\frac{7}{10}$$

Tauwehe

$$\frac{7}{2 \cdot 5} = 0.7$$