Whakaoti i te 0.3(23.90:28-18.81+5.88)

$$0.3 ( 23.90 : 28 - 18.81 + 5.88 )$$

Aromātai

$$-\frac{50721}{14000}\approx -3.622928571$$

Ngā Upane Otinga

Whakarohaina te \frac{23.9}{28} mā te whakarea i te taurunga me te tauraro ki te 10.

$$0.3\left(\frac{239}{280}-18.81+5.88\right)$$

Me tahuri ki tau ā-ira 18.81 ki te hautau \frac{1881}{100}.

$$0.3\left(\frac{239}{280}-\frac{1881}{100}+5.88\right)$$

Ko te maha noa iti rawa atu o 280 me 100 ko 1400. Me tahuri \frac{239}{280} me \frac{1881}{100} ki te hautau me te tautūnga 1400.

$$0.3\left(\frac{1195}{1400}-\frac{26334}{1400}+5.88\right)$$

Tā te mea he rite te tauraro o \frac{1195}{1400} me \frac{26334}{1400}, me tango rāua mā te tango i ō raua taurunga.

$$0.3\left(\frac{1195-26334}{1400}+5.88\right)$$

Tangohia te 26334 i te 1195, ka -25139.

$$0.3\left(-\frac{25139}{1400}+5.88\right)$$

Me tahuri ki tau ā-ira 5.88 ki te hautau \frac{588}{100}. Whakahekea te hautanga \frac{588}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.

$$0.3\left(-\frac{25139}{1400}+\frac{147}{25}\right)$$

Ko te maha noa iti rawa atu o 1400 me 25 ko 1400. Me tahuri -\frac{25139}{1400} me \frac{147}{25} ki te hautau me te tautūnga 1400.

$$0.3\left(-\frac{25139}{1400}+\frac{8232}{1400}\right)$$

Tā te mea he rite te tauraro o -\frac{25139}{1400} me \frac{8232}{1400}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$0.3\times \frac{-25139+8232}{1400}$$

Tāpirihia te -25139 ki te 8232, ka -16907.

$$0.3\left(-\frac{16907}{1400}\right)$$

Me tahuri ki tau ā-ira 0.3 ki te hautau \frac{3}{10}.

$$\frac{3}{10}\left(-\frac{16907}{1400}\right)$$

Me whakarea te \frac{3}{10} ki te -\frac{16907}{1400} mā te whakarea taurunga ki te taurunga me te tauraro ki te tauraro.

$$\frac{3\left(-16907\right)}{10\times 1400}$$

Mahia ngā whakarea i roto i te hautanga \frac{3\left(-16907\right)}{10\times 1400}.

$$\frac{-50721}{14000}$$

Ka taea te hautanga \frac{-50721}{14000} te tuhi anō ko -\frac{50721}{14000} mā te tango i te tohu tōraro.

$$-\frac{50721}{14000}$$

Tauwehe

$$-\frac{50721}{14000} = -3\frac{8721}{14000} = -3.6229285714285715$$