Datrys 21,3+21,2+2,1+21,2+21,3+3,4/6=

$$\frac { 21,3 + 21,2 + 2,1 + 21,2 + 21,3 + 3,4 } { 6 } =$$

Enrhifo

$$\frac{181}{12}\approx 15.083333333$$

Camau Ateb

Adio 21.3 a 21.2 i gael 42.5.

$$\frac{42.5+2.1+21.2+21.3+3.4}{6}$$

Adio 42.5 a 2.1 i gael 44.6.

$$\frac{44.6+21.2+21.3+3.4}{6}$$

Adio 44.6 a 21.2 i gael 65.8.

$$\frac{65.8+21.3+3.4}{6}$$

Adio 65.8 a 21.3 i gael 87.1.

$$\frac{87.1+3.4}{6}$$

Adio 87.1 a 3.4 i gael 90.5.

$$\frac{90.5}{6}$$

Ehangu \frac{90.5}{6} drwy luosi'r rhifiadur a'r enwadur gyda 10.

$$\frac{905}{60}$$

Lleihau'r ffracsiwn \frac{905}{60} i'r graddau lleiaf posib drwy dynnu a chanslo allan 5.

$$\frac{181}{12}$$

Ffactor

$$\frac{181}{3 \cdot 2 ^ {2}} = 15\frac{1}{12} = 15.083333333333334$$