Datrys x-1/x-x/x-1

$$\frac { x - 1 } { x } - \frac { x } { x - 1 }$$

Enrhifo

$$\frac{1-2x}{x\left(x-1\right)}$$

Camau Ateb Byr

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin x a x-1 yw x\left(x-1\right). Lluoswch \frac{x-1}{x} â \frac{x-1}{x-1}. Lluoswch \frac{x}{x-1} â \frac{x}{x}.

$$\frac{\left(x-1\right)\left(x-1\right)}{x\left(x-1\right)}-\frac{xx}{x\left(x-1\right)}$$

Gan fod gan \frac{\left(x-1\right)\left(x-1\right)}{x\left(x-1\right)} a \frac{xx}{x\left(x-1\right)} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{\left(x-1\right)\left(x-1\right)-xx}{x\left(x-1\right)}$$

Gwnewch y gwaith lluosi yn \left(x-1\right)\left(x-1\right)-xx.

$$\frac{x^{2}-x-x+1-x^{2}}{x\left(x-1\right)}$$

Cyfuno termau tebyg yn x^{2}-x-x+1-x^{2}.

$$\frac{-2x+1}{x\left(x-1\right)}$$

Ehangu x\left(x-1\right).

$$\frac{-2x+1}{x^{2}-x}$$

Ehangu

$$\frac{1-2x}{x\left(x-1\right)}$$

Camau Ateb Byr

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluosrif lleiaf cyffredin x a x-1 yw x\left(x-1\right). Lluoswch \frac{x-1}{x} â \frac{x-1}{x-1}. Lluoswch \frac{x}{x-1} â \frac{x}{x}.

$$\frac{\left(x-1\right)\left(x-1\right)}{x\left(x-1\right)}-\frac{xx}{x\left(x-1\right)}$$

Gan fod gan \frac{\left(x-1\right)\left(x-1\right)}{x\left(x-1\right)} a \frac{xx}{x\left(x-1\right)} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{\left(x-1\right)\left(x-1\right)-xx}{x\left(x-1\right)}$$

Gwnewch y gwaith lluosi yn \left(x-1\right)\left(x-1\right)-xx.

$$\frac{x^{2}-x-x+1-x^{2}}{x\left(x-1\right)}$$

Cyfuno termau tebyg yn x^{2}-x-x+1-x^{2}.

$$\frac{-2x+1}{x\left(x-1\right)}$$

Ehangu x\left(x-1\right).

$$\frac{-2x+1}{x^{2}-x}$$