Whakaoti i te (8.2-1.4+2.2):0.3-(1.4+0.9*0.1)

$$( 8.2 - 1.4 + 2.2 ) : 0.3 - ( 1.4 + 0.9 \cdot 0.1 )$$

Aromātai

$$28.51$$

Ngā Upane Otinga

Tangohia te 1.4 i te 8.2, ka 6.8.

$$\frac{6.8+2.2}{0.3}-\left(1.4+0.9\times 0.1\right)$$

Tāpirihia te 6.8 ki te 2.2, ka 9.

$$\frac{9}{0.3}-\left(1.4+0.9\times 0.1\right)$$

Whakarohaina te \frac{9}{0.3} mā te whakarea i te taurunga me te tauraro ki te 10.

$$\frac{90}{3}-\left(1.4+0.9\times 0.1\right)$$

Whakawehea te 90 ki te 3, kia riro ko 30.

$$30-\left(1.4+0.9\times 0.1\right)$$

Whakareatia te 0.9 ki te 0.1, ka 0.09.

$$30-\left(1.4+0.09\right)$$

Tāpirihia te 1.4 ki te 0.09, ka 1.49.

$$30-1.49$$

Tangohia te 1.49 i te 30, ka 28.51.

$$28.51$$

Tauwehe

$$\frac{2851}{2 ^ {2} \cdot 5 ^ {2}} = 28\frac{51}{100} = 28.51$$