Datrys 100-42*(325-175/1387-137

$$\frac{ 100-42 \times (325-175 }{ 1387-137 }$$

Enrhifo

$$\frac{2374}{25}=94.96$$

Camau Ateb

Tynnu 175 o 325 i gael 150.

$$100-\frac{42\times 150}{1387-137}$$

Lluosi 42 a 150 i gael 6300.

$$100-\frac{6300}{1387-137}$$

Tynnu 137 o 1387 i gael 1250.

$$100-\frac{6300}{1250}$$

Lleihau'r ffracsiwn \frac{6300}{1250} i'r graddau lleiaf posib drwy dynnu a chanslo allan 50.

$$100-\frac{126}{25}$$

Troswch y rhif degol 100 i’r ffracsiwn \frac{2500}{25}.

$$\frac{2500}{25}-\frac{126}{25}$$

Gan fod gan \frac{2500}{25} a \frac{126}{25} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{2500-126}{25}$$

Tynnu 126 o 2500 i gael 2374.

$$\frac{2374}{25}$$

Ffactor

$$\frac{2 \cdot 1187}{5 ^ {2}} = 94\frac{24}{25} = 94.96$$