Datrys {l}{7/19-5/9=5-0}{8/21+7/9=6-0}

$$\left. \begin{array} { l } { \frac { 7 } { 19 } - \frac { 5 } { 9 } = 5 - 0 } \\ { \frac { 8 } { 21 } + \frac { 7 } { 9 } = 6 - 0 } \end{array} \right.$$

Gwireddu

Camau Ateb

Lluosrif lleiaf cyffredin 19 a 9 yw 171. Troswch \frac{7}{19} a \frac{5}{9} yn ffracsiynau gyda’r enwadur 171.

$$\frac{63}{171}-\frac{95}{171}=5-0\text{ and }\frac{8}{21}+\frac{7}{9}=6-0$$

Gan fod gan \frac{63}{171} a \frac{95}{171} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.

$$\frac{63-95}{171}=5-0\text{ and }\frac{8}{21}+\frac{7}{9}=6-0$$

Tynnu 95 o 63 i gael -32.

$$-\frac{32}{171}=5-0\text{ and }\frac{8}{21}+\frac{7}{9}=6-0$$

Tynnu 0 o 5 i gael 5.

$$-\frac{32}{171}=5\text{ and }\frac{8}{21}+\frac{7}{9}=6-0$$

Troswch y rhif degol 5 i’r ffracsiwn \frac{855}{171}.

$$-\frac{32}{171}=\frac{855}{171}\text{ and }\frac{8}{21}+\frac{7}{9}=6-0$$

Cymharu -\frac{32}{171} gyda \frac{855}{171}.

$$\text{false}\text{ and }\frac{8}{21}+\frac{7}{9}=6-0$$

Lluosrif lleiaf cyffredin 21 a 9 yw 63. Troswch \frac{8}{21} a \frac{7}{9} yn ffracsiynau gyda’r enwadur 63.

$$\text{false}\text{ and }\frac{24}{63}+\frac{49}{63}=6-0$$

Gan fod gan \frac{24}{63} a \frac{49}{63} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.

$$\text{false}\text{ and }\frac{24+49}{63}=6-0$$

Adio 24 a 49 i gael 73.

$$\text{false}\text{ and }\frac{73}{63}=6-0$$

Tynnu 0 o 6 i gael 6.

$$\text{false}\text{ and }\frac{73}{63}=6$$

Troswch y rhif degol 6 i’r ffracsiwn \frac{378}{63}.

$$\text{false}\text{ and }\frac{73}{63}=\frac{378}{63}$$

Cymharu \frac{73}{63} gyda \frac{378}{63}.

$$\text{false}\text{ and }\text{false}$$

Cysylltydd \text{false} a \text{false} yw \text{false}.

$$\text{false}$$