Datrys 02x+4/5y-(-2/5x)+1/10y+7/5y-2y

$$02 x + \frac { 4 } { 5 } y - ( - \frac { 2 } { 5 } x ) + \frac { 1 } { 10 } y + \frac { 7 } { 5 } y - 2 y$$

Enrhifo

$$\frac{2x}{5}+\frac{3y}{10}$$

Camau Ateb

Lluosi 0 a 2 i gael 0.

$$0x+\frac{4}{5}y-\left(-\frac{2}{5}x\right)+\frac{1}{10}y+\frac{7}{5}y-2y$$

Mae lluosi unrhyw beth â sero yn rhoi sero.

$$0+\frac{4}{5}y-\left(-\frac{2}{5}x\right)+\frac{1}{10}y+\frac{7}{5}y-2y$$

Mae adio unrhyw beth at sero yn cyrraedd ei swm ei hun.

$$\frac{4}{5}y-\left(-\frac{2}{5}x\right)+\frac{1}{10}y+\frac{7}{5}y-2y$$

Gwrthwyneb -\frac{2}{5}x yw \frac{2}{5}x.

$$\frac{4}{5}y+\frac{2}{5}x+\frac{1}{10}y+\frac{7}{5}y-2y$$

Cyfuno \frac{4}{5}y a \frac{1}{10}y i gael \frac{9}{10}y.

$$\frac{9}{10}y+\frac{2}{5}x+\frac{7}{5}y-2y$$

Cyfuno \frac{9}{10}y a \frac{7}{5}y i gael \frac{23}{10}y.

$$\frac{23}{10}y+\frac{2}{5}x-2y$$

Cyfuno \frac{23}{10}y a -2y i gael \frac{3}{10}y.

$$\frac{3}{10}y+\frac{2}{5}x$$

Ffactor

$$\frac{4x+3y}{10}$$

Camau Ateb

Ffactora allan \frac{1}{10}.

$$\frac{0+8y+4x+y+14y-20y}{10}$$

Ystyriwch 8y+4x+y+14y-20y. Lluosi a chyfuno termau sydd yr un fath.

$$4x+3y$$

Ailysgrifennwch y mynegiad cyfan wedi'i ffactorio.

$$\frac{4x+3y}{10}$$