Datrys 3+4+9+10+12+15+17+27+47+48/10

$$\frac { 3 + 4 + 9 + 10 + 12 + 15 + 17 + 27 + 47 + 48 } { 10 }$$

Enrhifo

$$\frac{96}{5}=19.2$$

Camau Ateb

Adio 3 a 4 i gael 7.

$$\frac{7+9+10+12+15+17+27+47+48}{10}$$

Adio 7 a 9 i gael 16.

$$\frac{16+10+12+15+17+27+47+48}{10}$$

Adio 16 a 10 i gael 26.

$$\frac{26+12+15+17+27+47+48}{10}$$

Adio 26 a 12 i gael 38.

$$\frac{38+15+17+27+47+48}{10}$$

Adio 38 a 15 i gael 53.

$$\frac{53+17+27+47+48}{10}$$

Adio 53 a 17 i gael 70.

$$\frac{70+27+47+48}{10}$$

Adio 70 a 27 i gael 97.

$$\frac{97+47+48}{10}$$

Adio 97 a 47 i gael 144.

$$\frac{144+48}{10}$$

Adio 144 a 48 i gael 192.

$$\frac{192}{10}$$

Lleihau'r ffracsiwn \frac{192}{10} i'r graddau lleiaf posib drwy dynnu a chanslo allan 2.

$$\frac{96}{5}$$

Ffactor

$$\frac{2 ^ {5} \cdot 3}{5} = 19\frac{1}{5} = 19.2$$