Datrys ar gyfer x
x = \frac{16}{3} = 5\frac{1}{3} \approx 5.333333333
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2\left(3\times 2+1\right)=\left(1\times 2+1\right)x-2
Lluoswch ddwy ochr yr hafaliad â 2.
2\left(6+1\right)=\left(1\times 2+1\right)x-2
Lluosi 3 a 2 i gael 6.
2\times 7=\left(1\times 2+1\right)x-2
Adio 6 a 1 i gael 7.
14=\left(1\times 2+1\right)x-2
Lluosi 2 a 7 i gael 14.
14=\left(2+1\right)x-2
Lluosi 1 a 2 i gael 2.
14=3x-2
Adio 2 a 1 i gael 3.
3x-2=14
Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.
3x=14+2
Ychwanegu 2 at y ddwy ochr.
3x=16
Adio 14 a 2 i gael 16.
x=\frac{16}{3}
Rhannu’r ddwy ochr â 3.
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