Datrys ar gyfer x
x=0.001
Graff
Rhannu
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29\times \frac{1}{10000000}=2.9\times 10^{-3}x
Cyfrifo 10 i bŵer -7 a chael \frac{1}{10000000}.
\frac{29}{10000000}=2.9\times 10^{-3}x
Lluosi 29 a \frac{1}{10000000} i gael \frac{29}{10000000}.
\frac{29}{10000000}=2.9\times \frac{1}{1000}x
Cyfrifo 10 i bŵer -3 a chael \frac{1}{1000}.
\frac{29}{10000000}=\frac{29}{10000}x
Lluosi 2.9 a \frac{1}{1000} i gael \frac{29}{10000}.
\frac{29}{10000}x=\frac{29}{10000000}
Cyfnewidiwch yr ochrau fel bod yr holl dermau newidiol ar yr ochr chwith.
x=\frac{29}{10000000}\times \frac{10000}{29}
Lluoswch y ddwy ochr â \frac{10000}{29}, cilyddol \frac{29}{10000}.
x=\frac{1}{1000}
Lluosi \frac{29}{10000000} a \frac{10000}{29} i gael \frac{1}{1000}.
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