Datrys ar gyfer x
x = \frac{1439}{63} = 22\frac{53}{63} \approx 22.841269841
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14+2.5x-7.5+3.8\left(x-15-3\right)=82
Defnyddio’r briodwedd ddosbarthu i luosi 2.5 â x-3.
6.5+2.5x+3.8\left(x-15-3\right)=82
Tynnu 7.5 o 14 i gael 6.5.
6.5+2.5x+3.8\left(x-18\right)=82
Tynnu 3 o -15 i gael -18.
6.5+2.5x+3.8x-68.4=82
Defnyddio’r briodwedd ddosbarthu i luosi 3.8 â x-18.
6.5+6.3x-68.4=82
Cyfuno 2.5x a 3.8x i gael 6.3x.
-61.9+6.3x=82
Tynnu 68.4 o 6.5 i gael -61.9.
6.3x=82+61.9
Ychwanegu 61.9 at y ddwy ochr.
6.3x=143.9
Adio 82 a 61.9 i gael 143.9.
x=\frac{143.9}{6.3}
Rhannu’r ddwy ochr â 6.3.
x=\frac{1439}{63}
Ehangu \frac{143.9}{6.3} drwy luosi'r rhifiadur a'r enwadur gyda 10.
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