Datrys n-1/10n+10-6/2

$$\frac { n - 1 } { 10 n + 10 } - \frac { 6 } { 2 }$$

Enrhifo

$$-\frac{29n+31}{10\left(n+1\right)}$$

Camau Ateb Byr

Rhannu 6 â 2 i gael 3.

$$\frac{n-1}{10n+10}-3$$

Ffactora 10n+10.

$$\frac{n-1}{10\left(n+1\right)}-3$$

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluoswch 3 â \frac{10\left(n+1\right)}{10\left(n+1\right)}.

$$\frac{n-1}{10\left(n+1\right)}-\frac{3\times 10\left(n+1\right)}{10\left(n+1\right)}$$

Gan fod gan \frac{n-1}{10\left(n+1\right)} a \frac{3\times 10\left(n+1\right)}{10\left(n+1\right)} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{n-1-3\times 10\left(n+1\right)}{10\left(n+1\right)}$$

Gwnewch y gwaith lluosi yn n-1-3\times 10\left(n+1\right).

$$\frac{n-1-30n-30}{10\left(n+1\right)}$$

Cyfuno termau tebyg yn n-1-30n-30.

$$\frac{-29n-31}{10\left(n+1\right)}$$

Ehangu 10\left(n+1\right).

$$\frac{-29n-31}{10n+10}$$

Ehangu

$$-\frac{29n+31}{10\left(n+1\right)}$$

Camau Ateb Byr

Rhannu 6 â 2 i gael 3.

$$\frac{n-1}{10n+10}-3$$

Ffactora 10n+10.

$$\frac{n-1}{10\left(n+1\right)}-3$$

I ychwanegu neu dynnu mynegiannau, rhaid i chi eu ehangu i wneud eu enwaduron yr un fath. Lluoswch 3 â \frac{10\left(n+1\right)}{10\left(n+1\right)}.

$$\frac{n-1}{10\left(n+1\right)}-\frac{3\times 10\left(n+1\right)}{10\left(n+1\right)}$$

Gan fod gan \frac{n-1}{10\left(n+1\right)} a \frac{3\times 10\left(n+1\right)}{10\left(n+1\right)} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{n-1-3\times 10\left(n+1\right)}{10\left(n+1\right)}$$

Gwnewch y gwaith lluosi yn n-1-3\times 10\left(n+1\right).

$$\frac{n-1-30n-30}{10\left(n+1\right)}$$

Cyfuno termau tebyg yn n-1-30n-30.

$$\frac{-29n-31}{10\left(n+1\right)}$$

Ehangu 10\left(n+1\right).

$$\frac{-29n-31}{10n+10}$$