Datrys ar gyfer x
x=\frac{2}{5}=0.4
Graff
Rhannu
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\frac{5}{2}x=1
Cyfuno 2x a \frac{1}{2}x i gael \frac{5}{2}x.
x=1\times \frac{2}{5}
Lluoswch y ddwy ochr â \frac{2}{5}, cilyddol \frac{5}{2}.
x=\frac{2}{5}
Lluosi 1 a \frac{2}{5} i gael \frac{2}{5}.
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