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\frac{150}{5}-\frac{4}{5}=10
Troswch y rhif degol 30 i’r ffracsiwn \frac{150}{5}.
\frac{150-4}{5}=10
Gan fod gan \frac{150}{5} a \frac{4}{5} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{146}{5}=10
Tynnu 4 o 150 i gael 146.
\frac{146}{5}=\frac{50}{5}
Troswch y rhif degol 10 i’r ffracsiwn \frac{50}{5}.
\text{false}
Cymharu \frac{146}{5} gyda \frac{50}{5}.
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