Datrys (8.2-1.4+2.2):0.3-(1.4+0.9*0.1)

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

Enrhifo

$$28.51$$

Camau Ateb

Tynnu 1.4 o 8.2 i gael 6.8.

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

Adio 6.8 a 2.2 i gael 9.

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

Ehangu \frac{9}{0.3} drwy luosi'r rhifiadur a'r enwadur gyda 10.

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

Rhannu 90 â 3 i gael 30.

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

Lluosi 0.9 a 0.1 i gael 0.09.

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

Adio 1.4 a 0.09 i gael 1.49.

$$30-1.49$$

Tynnu 1.49 o 30 i gael 28.51.

$$28.51$$

Ffactor

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