Datrys ar gyfer x
x=5
Graff
Rhannu
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\frac{1}{5}x=\frac{10\times 4}{5}-2-x
Mynegwch 10\times \frac{4}{5} fel ffracsiwn unigol.
\frac{1}{5}x=\frac{40}{5}-2-x
Lluosi 10 a 4 i gael 40.
\frac{1}{5}x=8-2-x
Rhannu 40 â 5 i gael 8.
\frac{1}{5}x=6-x
Tynnu 2 o 8 i gael 6.
\frac{1}{5}x+x=6
Ychwanegu x at y ddwy ochr.
\frac{6}{5}x=6
Cyfuno \frac{1}{5}x a x i gael \frac{6}{5}x.
x=6\times \frac{5}{6}
Lluoswch y ddwy ochr â \frac{5}{6}, cilyddol \frac{6}{5}.
x=5
Canslo 6 a 6.
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