Datrys ar gyfer x
x=1
Graff
Rhannu
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\frac{\frac{3}{7}x-\frac{1}{7}}{\frac{3}{5}}=\frac{\frac{2x}{3}}{\frac{7}{5}}
Rhannu pob term 3x-1 â 7 i gael \frac{3}{7}x-\frac{1}{7}.
\frac{\frac{3}{7}x}{\frac{3}{5}}+\frac{-\frac{1}{7}}{\frac{3}{5}}=\frac{\frac{2x}{3}}{\frac{7}{5}}
Rhannu pob term \frac{3}{7}x-\frac{1}{7} â \frac{3}{5} i gael \frac{\frac{3}{7}x}{\frac{3}{5}}+\frac{-\frac{1}{7}}{\frac{3}{5}}.
\frac{5}{7}x+\frac{-\frac{1}{7}}{\frac{3}{5}}=\frac{\frac{2x}{3}}{\frac{7}{5}}
Rhannu \frac{3}{7}x â \frac{3}{5} i gael \frac{5}{7}x.
\frac{5}{7}x-\frac{1}{7}\times \frac{5}{3}=\frac{\frac{2x}{3}}{\frac{7}{5}}
Rhannwch -\frac{1}{7} â \frac{3}{5} drwy luosi -\frac{1}{7} â chilydd \frac{3}{5}.
\frac{5}{7}x+\frac{-5}{7\times 3}=\frac{\frac{2x}{3}}{\frac{7}{5}}
Lluoswch -\frac{1}{7} â \frac{5}{3} drwy luosi'r rhifiadur â’r rhifiadur a'r enwadur â’r enwadur.
\frac{5}{7}x+\frac{-5}{21}=\frac{\frac{2x}{3}}{\frac{7}{5}}
Gwnewch y gwaith lluosi yn y ffracsiwn \frac{-5}{7\times 3}.
\frac{5}{7}x-\frac{5}{21}=\frac{\frac{2x}{3}}{\frac{7}{5}}
Gellir ailysgrifennu \frac{-5}{21} fel -\frac{5}{21} drwy echdynnu’r arwydd negatif.
\frac{5}{7}x-\frac{5}{21}-\frac{\frac{2x}{3}}{\frac{7}{5}}=0
Tynnu \frac{\frac{2x}{3}}{\frac{7}{5}} o'r ddwy ochr.
\frac{5}{7}x-\frac{\frac{2x}{3}}{\frac{7}{5}}=\frac{5}{21}
Ychwanegu \frac{5}{21} at y ddwy ochr. Mae adio unrhyw beth at sero yn cyrraedd ei swm ei hun.
-\frac{2x}{\frac{7}{5}\times 3}+\frac{5}{7}x=\frac{5}{21}
Aildrefnu'r termau.
-\frac{2x}{\frac{7\times 3}{5}}+\frac{5}{7}x=\frac{5}{21}
Mynegwch \frac{7}{5}\times 3 fel ffracsiwn unigol.
-\frac{2x}{\frac{21}{5}}+\frac{5}{7}x=\frac{5}{21}
Lluosi 7 a 3 i gael 21.
-\frac{10}{21}x+\frac{5}{7}x=\frac{5}{21}
Rhannu 2x â \frac{21}{5} i gael \frac{10}{21}x.
\frac{5}{21}x=\frac{5}{21}
Cyfuno -\frac{10}{21}x a \frac{5}{7}x i gael \frac{5}{21}x.
x=\frac{5}{21}\times \frac{21}{5}
Lluoswch y ddwy ochr â \frac{21}{5}, cilyddol \frac{5}{21}.
x=1
Canslo \frac{5}{21} a'i gilydd \frac{21}{5}.
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