Datrys (12.5-8.33)(38.34-21.66)/2

$$\frac{ (12.5-8.33)(38.34-21.66) }{ 2 }$$

Enrhifo

$$34.7778$$

Camau Ateb

Tynnu 8.33 o 12.5 i gael 4.17.

$$\frac{4.17\left(38.34-21.66\right)}{2}$$

Tynnu 21.66 o 38.34 i gael 16.68.

$$\frac{4.17\times 16.68}{2}$$

Lluosi 4.17 a 16.68 i gael 69.5556.

$$\frac{69.5556}{2}$$

Ehangu \frac{69.5556}{2} drwy luosi'r rhifiadur a'r enwadur gyda 10000.

$$\frac{695556}{20000}$$

Lleihau'r ffracsiwn \frac{695556}{20000} i'r graddau lleiaf posib drwy dynnu a chanslo allan 4.

$$\frac{173889}{5000}$$

Ffactor

$$\frac{3 ^ {2} \cdot 139 ^ {2}}{2 ^ {3} \cdot 5 ^ {4}} = 34\frac{3889}{5000} = 34.7778$$