Datrys (3/1-frac{2{5}})(2-9/5)

$$( \frac { 3 } { 1 - \frac { 2 } { 5 } } ) ( 2 - \frac { 9 } { 5 } )$$

Enrhifo

$$1$$

Camau Ateb

Troswch y rhif degol 1 i’r ffracsiwn \frac{5}{5}.

$$\frac{3}{\frac{5}{5}-\frac{2}{5}}\left(2-\frac{9}{5}\right)$$

Gan fod gan \frac{5}{5} a \frac{2}{5} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{3}{\frac{5-2}{5}}\left(2-\frac{9}{5}\right)$$

Tynnu 2 o 5 i gael 3.

$$\frac{3}{\frac{3}{5}}\left(2-\frac{9}{5}\right)$$

Rhannwch 3 â \frac{3}{5} drwy luosi 3 â chilydd \frac{3}{5}.

$$3\times \frac{5}{3}\left(2-\frac{9}{5}\right)$$

Canslo 3 a 3.

$$5\left(2-\frac{9}{5}\right)$$

Troswch y rhif degol 2 i’r ffracsiwn \frac{10}{5}.

$$5\left(\frac{10}{5}-\frac{9}{5}\right)$$

Gan fod gan \frac{10}{5} a \frac{9}{5} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$5\times \frac{10-9}{5}$$

Tynnu 9 o 10 i gael 1.

$$5\times \frac{1}{5}$$

Canslo 5 a 5.

$$1$$

Ffactor

$$1$$