Datrys ar gyfer x
x=6
Graff
Rhannu
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\frac{2}{5}x+1-\frac{2}{3}x=\frac{7}{5}-\frac{1}{3}x
Cyfuno x a -\frac{3}{5}x i gael \frac{2}{5}x.
-\frac{4}{15}x+1=\frac{7}{5}-\frac{1}{3}x
Cyfuno \frac{2}{5}x a -\frac{2}{3}x i gael -\frac{4}{15}x.
-\frac{4}{15}x+1+\frac{1}{3}x=\frac{7}{5}
Ychwanegu \frac{1}{3}x at y ddwy ochr.
\frac{1}{15}x+1=\frac{7}{5}
Cyfuno -\frac{4}{15}x a \frac{1}{3}x i gael \frac{1}{15}x.
\frac{1}{15}x=\frac{7}{5}-1
Tynnu 1 o'r ddwy ochr.
\frac{1}{15}x=\frac{7}{5}-\frac{5}{5}
Troswch y rhif degol 1 i’r ffracsiwn \frac{5}{5}.
\frac{1}{15}x=\frac{7-5}{5}
Gan fod gan \frac{7}{5} a \frac{5}{5} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{1}{15}x=\frac{2}{5}
Tynnu 5 o 7 i gael 2.
x=\frac{2}{5}\times 15
Lluoswch y ddwy ochr â 15, cilyddol \frac{1}{15}.
x=\frac{2\times 15}{5}
Mynegwch \frac{2}{5}\times 15 fel ffracsiwn unigol.
x=\frac{30}{5}
Lluosi 2 a 15 i gael 30.
x=6
Rhannu 30 â 5 i gael 6.
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