Datrys (3+3.5+2.5+2.5+2.5+2+2+2+1+1.5)div10

$$(3+3.5+2.5+2.5+2.5+2+2+2+1+1.5) \div 10$$

Enrhifo

$$2.25$$

Camau Ateb

Adio 3 a 3.5 i gael 6.5.

$$\frac{6.5+2.5+2.5+2.5+2+2+2+1+1.5}{10}$$

Adio 6.5 a 2.5 i gael 9.

$$\frac{9+2.5+2.5+2+2+2+1+1.5}{10}$$

Adio 9 a 2.5 i gael 11.5.

$$\frac{11.5+2.5+2+2+2+1+1.5}{10}$$

Adio 11.5 a 2.5 i gael 14.

$$\frac{14+2+2+2+1+1.5}{10}$$

Adio 14 a 2 i gael 16.

$$\frac{16+2+2+1+1.5}{10}$$

Adio 16 a 2 i gael 18.

$$\frac{18+2+1+1.5}{10}$$

Adio 18 a 2 i gael 20.

$$\frac{20+1+1.5}{10}$$

Adio 20 a 1 i gael 21.

$$\frac{21+1.5}{10}$$

Adio 21 a 1.5 i gael 22.5.

$$\frac{22.5}{10}$$

Ehangu \frac{22.5}{10} drwy luosi'r rhifiadur a'r enwadur gyda 10.

$$\frac{225}{100}$$

Lleihau'r ffracsiwn \frac{225}{100} i'r graddau lleiaf posib drwy dynnu a chanslo allan 25.

$$\frac{9}{4}$$

Ffactor

$$\frac{3 ^ {2}}{2 ^ {2}} = 2\frac{1}{4} = 2.25$$