Datrys ar gyfer x
x=-\frac{1989}{946120000000}\approx -2.102270325 \cdot 10^{-9}
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-663\times 10^{-34}\times 3\times 10^{9}=94612\times 10^{-18}x
Lluoswch ddwy ochr yr hafaliad â 434.
-663\times \frac{1}{10000000000000000000000000000000000}\times 3\times 10^{9}=94612\times 10^{-18}x
Cyfrifo 10 i bŵer -34 a chael \frac{1}{10000000000000000000000000000000000}.
-\frac{663}{10000000000000000000000000000000000}\times 3\times 10^{9}=94612\times 10^{-18}x
Lluosi -663 a \frac{1}{10000000000000000000000000000000000} i gael -\frac{663}{10000000000000000000000000000000000}.
-\frac{1989}{10000000000000000000000000000000000}\times 10^{9}=94612\times 10^{-18}x
Lluosi -\frac{663}{10000000000000000000000000000000000} a 3 i gael -\frac{1989}{10000000000000000000000000000000000}.
-\frac{1989}{10000000000000000000000000000000000}\times 1000000000=94612\times 10^{-18}x
Cyfrifo 10 i bŵer 9 a chael 1000000000.
-\frac{1989}{10000000000000000000000000}=94612\times 10^{-18}x
Lluosi -\frac{1989}{10000000000000000000000000000000000} a 1000000000 i gael -\frac{1989}{10000000000000000000000000}.
-\frac{1989}{10000000000000000000000000}=94612\times \frac{1}{1000000000000000000}x
Cyfrifo 10 i bŵer -18 a chael \frac{1}{1000000000000000000}.
-\frac{1989}{10000000000000000000000000}=\frac{23653}{250000000000000000}x
Lluosi 94612 a \frac{1}{1000000000000000000} i gael \frac{23653}{250000000000000000}.
\frac{23653}{250000000000000000}x=-\frac{1989}{10000000000000000000000000}
Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.
x=-\frac{1989}{10000000000000000000000000}\times \frac{250000000000000000}{23653}
Lluoswch y ddwy ochr â \frac{250000000000000000}{23653}, cilyddol \frac{23653}{250000000000000000}.
x=-\frac{1989}{946120000000}
Lluosi -\frac{1989}{10000000000000000000000000} a \frac{250000000000000000}{23653} i gael -\frac{1989}{946120000000}.
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