Datrys ar gyfer T_F
T_{F} = \frac{52}{5} = 10\frac{2}{5} = 10.4
Rhannu
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5T_{F}=20+32
Ychwanegu 32 at y ddwy ochr.
5T_{F}=52
Adio 20 a 32 i gael 52.
T_{F}=\frac{52}{5}
Rhannu’r ddwy ochr â 5.
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