Datrys 10-2-5:1000-1500*2987657

$$10 - 2 - 5 : 1000 - 1500 \cdot 2987657$$

Enrhifo

$$-\frac{896297098401}{200}=-4481485492.005$$

Camau Ateb

Tynnu 2 o 10 i gael 8.

$$8-\frac{5}{1000}-1500\times 2987657$$

Lleihau'r ffracsiwn \frac{5}{1000} i'r graddau lleiaf posib drwy dynnu a chanslo allan 5.

$$8-\frac{1}{200}-1500\times 2987657$$

Troswch y rhif degol 8 i’r ffracsiwn \frac{1600}{200}.

$$\frac{1600}{200}-\frac{1}{200}-1500\times 2987657$$

Gan fod gan \frac{1600}{200} a \frac{1}{200} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{1600-1}{200}-1500\times 2987657$$

Tynnu 1 o 1600 i gael 1599.

$$\frac{1599}{200}-1500\times 2987657$$

Lluosi 1500 a 2987657 i gael 4481485500.

$$\frac{1599}{200}-4481485500$$

Troswch y rhif degol 4481485500 i’r ffracsiwn \frac{896297100000}{200}.

$$\frac{1599}{200}-\frac{896297100000}{200}$$

Gan fod gan \frac{1599}{200} a \frac{896297100000}{200} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{1599-896297100000}{200}$$

Tynnu 896297100000 o 1599 i gael -896297098401.

$$-\frac{896297098401}{200}$$

Ffactor

$$-\frac{896297098401}{200} = -4481485492\frac{1}{200} = -4481485492.005$$