Whakaoti i te (42/5-2.9)*61/3

$$( 4 \frac { 2 } { 5 } - 2.9 ) \cdot 6 \frac { 1 } { 3 }$$

Aromātai

$$9.5$$

Ngā Upane Otinga

Whakareatia te 4 ki te 5, ka 20.

$$\left(\frac{20+2}{5}-2.9\right)\times \frac{6\times 3+1}{3}$$

Tāpirihia te 20 ki te 2, ka 22.

$$\left(\frac{22}{5}-2.9\right)\times \frac{6\times 3+1}{3}$$

Me tahuri ki tau ā-ira 2.9 ki te hautau \frac{29}{10}.

$$\left(\frac{22}{5}-\frac{29}{10}\right)\times \frac{6\times 3+1}{3}$$

Ko te maha noa iti rawa atu o 5 me 10 ko 10. Me tahuri \frac{22}{5} me \frac{29}{10} ki te hautau me te tautūnga 10.

$$\left(\frac{44}{10}-\frac{29}{10}\right)\times \frac{6\times 3+1}{3}$$

Tā te mea he rite te tauraro o \frac{44}{10} me \frac{29}{10}, me tango rāua mā te tango i ō raua taurunga.

$$\frac{44-29}{10}\times \frac{6\times 3+1}{3}$$

Tangohia te 29 i te 44, ka 15.

$$\frac{15}{10}\times \frac{6\times 3+1}{3}$$

Whakahekea te hautanga \frac{15}{10} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 5.

$$\frac{3}{2}\times \frac{6\times 3+1}{3}$$

Whakareatia te 6 ki te 3, ka 18.

$$\frac{3}{2}\times \frac{18+1}{3}$$

Tāpirihia te 18 ki te 1, ka 19.

$$\frac{3}{2}\times \frac{19}{3}$$

Me whakarea te \frac{3}{2} ki te \frac{19}{3} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{3\times 19}{2\times 3}$$

Me whakakore tahi te 3 i te taurunga me te tauraro.

$$\frac{19}{2}$$

Tauwehe

$$\frac{19}{2} = 9\frac{1}{2} = 9.5$$