Datrys ar gyfer θ
\theta =-\frac{32}{17}\approx -1.882352941
Graff
Rhannu
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17\theta =-32
Cyfuno 18\theta a -\theta i gael 17\theta .
\theta =\frac{-32}{17}
Rhannu’r ddwy ochr â 17.
\theta =-\frac{32}{17}
Gellir ailysgrifennu \frac{-32}{17} fel -\frac{32}{17} drwy echdynnu’r arwydd negatif.
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