Datrys ar gyfer y
y = \frac{1733}{57} = 30\frac{23}{57} \approx 30.403508772
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\frac{7}{9}\times 6y+\frac{7}{9}\times 2+\frac{3}{51}\left(9\left(5-10y\right)+25\right)=15-y+2
Defnyddio’r briodwedd ddosbarthu i luosi \frac{7}{9} â 6y+2.
\frac{7\times 6}{9}y+\frac{7}{9}\times 2+\frac{3}{51}\left(9\left(5-10y\right)+25\right)=15-y+2
Mynegwch \frac{7}{9}\times 6 fel ffracsiwn unigol.
\frac{42}{9}y+\frac{7}{9}\times 2+\frac{3}{51}\left(9\left(5-10y\right)+25\right)=15-y+2
Lluosi 7 a 6 i gael 42.
\frac{14}{3}y+\frac{7}{9}\times 2+\frac{3}{51}\left(9\left(5-10y\right)+25\right)=15-y+2
Lleihau'r ffracsiwn \frac{42}{9} i'r graddau lleiaf posib drwy dynnu a chanslo allan 3.
\frac{14}{3}y+\frac{7\times 2}{9}+\frac{3}{51}\left(9\left(5-10y\right)+25\right)=15-y+2
Mynegwch \frac{7}{9}\times 2 fel ffracsiwn unigol.
\frac{14}{3}y+\frac{14}{9}+\frac{3}{51}\left(9\left(5-10y\right)+25\right)=15-y+2
Lluosi 7 a 2 i gael 14.
\frac{14}{3}y+\frac{14}{9}+\frac{1}{17}\left(9\left(5-10y\right)+25\right)=15-y+2
Lleihau'r ffracsiwn \frac{3}{51} i'r graddau lleiaf posib drwy dynnu a chanslo allan 3.
\frac{14}{3}y+\frac{14}{9}+\frac{1}{17}\left(45-90y+25\right)=15-y+2
Defnyddio’r briodwedd ddosbarthu i luosi 9 â 5-10y.
\frac{14}{3}y+\frac{14}{9}+\frac{1}{17}\left(70-90y\right)=15-y+2
Adio 45 a 25 i gael 70.
\frac{14}{3}y+\frac{14}{9}+\frac{1}{17}\times 70+\frac{1}{17}\left(-90\right)y=15-y+2
Defnyddio’r briodwedd ddosbarthu i luosi \frac{1}{17} â 70-90y.
\frac{14}{3}y+\frac{14}{9}+\frac{70}{17}+\frac{1}{17}\left(-90\right)y=15-y+2
Lluosi \frac{1}{17} a 70 i gael \frac{70}{17}.
\frac{14}{3}y+\frac{14}{9}+\frac{70}{17}+\frac{-90}{17}y=15-y+2
Lluosi \frac{1}{17} a -90 i gael \frac{-90}{17}.
\frac{14}{3}y+\frac{14}{9}+\frac{70}{17}-\frac{90}{17}y=15-y+2
Gellir ailysgrifennu \frac{-90}{17} fel -\frac{90}{17} drwy echdynnu’r arwydd negatif.
\frac{14}{3}y+\frac{238}{153}+\frac{630}{153}-\frac{90}{17}y=15-y+2
Lluosrif lleiaf cyffredin 9 a 17 yw 153. Troswch \frac{14}{9} a \frac{70}{17} yn ffracsiynau gyda’r enwadur 153.
\frac{14}{3}y+\frac{238+630}{153}-\frac{90}{17}y=15-y+2
Gan fod gan \frac{238}{153} a \frac{630}{153} yr un dynodydd, adiwch nhw drwy adio eu rhifiaduron.
\frac{14}{3}y+\frac{868}{153}-\frac{90}{17}y=15-y+2
Adio 238 a 630 i gael 868.
-\frac{32}{51}y+\frac{868}{153}=15-y+2
Cyfuno \frac{14}{3}y a -\frac{90}{17}y i gael -\frac{32}{51}y.
-\frac{32}{51}y+\frac{868}{153}=17-y
Adio 15 a 2 i gael 17.
-\frac{32}{51}y+\frac{868}{153}+y=17
Ychwanegu y at y ddwy ochr.
\frac{19}{51}y+\frac{868}{153}=17
Cyfuno -\frac{32}{51}y a y i gael \frac{19}{51}y.
\frac{19}{51}y=17-\frac{868}{153}
Tynnu \frac{868}{153} o'r ddwy ochr.
\frac{19}{51}y=\frac{2601}{153}-\frac{868}{153}
Troswch y rhif degol 17 i’r ffracsiwn \frac{2601}{153}.
\frac{19}{51}y=\frac{2601-868}{153}
Gan fod gan \frac{2601}{153} a \frac{868}{153} yr un dynodydd, tynnwch nhw drwy dynnu eu rhifiaduron.
\frac{19}{51}y=\frac{1733}{153}
Tynnu 868 o 2601 i gael 1733.
y=\frac{1733}{153}\times \frac{51}{19}
Lluoswch y ddwy ochr â \frac{51}{19}, cilyddol \frac{19}{51}.
y=\frac{1733\times 51}{153\times 19}
Lluoswch \frac{1733}{153} â \frac{51}{19} drwy luosi'r rhifiadur â’r rhifiadur a'r enwadur â’r enwadur.
y=\frac{88383}{2907}
Gwnewch y gwaith lluosi yn y ffracsiwn \frac{1733\times 51}{153\times 19}.
y=\frac{1733}{57}
Lleihau'r ffracsiwn \frac{88383}{2907} i'r graddau lleiaf posib drwy dynnu a chanslo allan 51.
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