Whakaoti i te (2.8-5.3)*4+(124%4-30%5)

$$( 2.8 - 5.3 ) \cdot 4 + ( 124 \% 4 - 30 \% 5 )$$

Aromātai

$$-6.54$$

Ngā Upane Otinga

Tangohia te 5.3 i te 2.8, ka -2.5.

$$-2.5\times 4+\frac{124}{100}\times 4-\frac{30}{100}\times 5$$

Whakareatia te -2.5 ki te 4, ka -10.

$$-10+\frac{124}{100}\times 4-\frac{30}{100}\times 5$$

Whakahekea te hautanga \frac{124}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 4.

$$-10+\frac{31}{25}\times 4-\frac{30}{100}\times 5$$

Tuhia te \frac{31}{25}\times 4 hei hautanga kotahi.

$$-10+\frac{31\times 4}{25}-\frac{30}{100}\times 5$$

Whakareatia te 31 ki te 4, ka 124.

$$-10+\frac{124}{25}-\frac{30}{100}\times 5$$

Whakahekea te hautanga \frac{30}{100} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 10.

$$-10+\frac{124}{25}-\frac{3}{10}\times 5$$

Tuhia te \frac{3}{10}\times 5 hei hautanga kotahi.

$$-10+\frac{124}{25}-\frac{3\times 5}{10}$$

Whakareatia te 3 ki te 5, ka 15.

$$-10+\frac{124}{25}-\frac{15}{10}$$

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

$$-10+\frac{124}{25}-\frac{3}{2}$$

Ko te maha noa iti rawa atu o 25 me 2 ko 50. Me tahuri \frac{124}{25} me \frac{3}{2} ki te hautau me te tautūnga 50.

$$-10+\frac{248}{50}-\frac{75}{50}$$

Tā te mea he rite te tauraro o \frac{248}{50} me \frac{75}{50}, me tango rāua mā te tango i ō raua taurunga.

$$-10+\frac{248-75}{50}$$

Tangohia te 75 i te 248, ka 173.

$$-10+\frac{173}{50}$$

Me tahuri te -10 ki te hautau -\frac{500}{50}.

$$-\frac{500}{50}+\frac{173}{50}$$

Tā te mea he rite te tauraro o -\frac{500}{50} me \frac{173}{50}, me tāpiri rāua mā te tāpiri i ō raua taurunga.

$$\frac{-500+173}{50}$$

Tāpirihia te -500 ki te 173, ka -327.

$$-\frac{327}{50}$$

Tauwehe

$$-6.54$$