Whakaoti i te (-9/10)*(5/6-11/9)

$$( - \frac { 9 } { 10 } ) \times ( \frac { 5 } { 6 } - 1 \frac { 1 } { 9 } )$$

Aromātai

$$\frac{1}{4}=0.25$$

Ngā Upane Otinga

Whakareatia te 1 ki te 9, ka 9.

$$-\frac{9}{10}\left(\frac{5}{6}-\frac{9+1}{9}\right)$$

Tāpirihia te 9 ki te 1, ka 10.

$$-\frac{9}{10}\left(\frac{5}{6}-\frac{10}{9}\right)$$

Ko te maha noa iti rawa atu o 6 me 9 ko 18. Me tahuri \frac{5}{6} me \frac{10}{9} ki te hautau me te tautūnga 18.

$$-\frac{9}{10}\left(\frac{15}{18}-\frac{20}{18}\right)$$

Tā te mea he rite te tauraro o \frac{15}{18} me \frac{20}{18}, me tango rāua mā te tango i ō raua taurunga.

$$-\frac{9}{10}\times \frac{15-20}{18}$$

Tangohia te 20 i te 15, ka -5.

$$-\frac{9}{10}\left(-\frac{5}{18}\right)$$

Me whakarea te -\frac{9}{10} ki te -\frac{5}{18} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{-9\left(-5\right)}{10\times 18}$$

Mahia ngā whakarea i roto i te hautanga \frac{-9\left(-5\right)}{10\times 18}.

$$\frac{45}{180}$$

Whakahekea te hautanga \frac{45}{180} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 45.

$$\frac{1}{4}$$

Tauwehe

$$\frac{1}{2 ^ {2}} = 0.25$$