Datrys ar gyfer x_7
x_{7}=3275.5
Rhannu
Copïo i clipfwrdd
x_{7}-5=3270.5
Adio 5 a 3265.5 i gael 3270.5.
x_{7}=3270.5+5
Ychwanegu 5 at y ddwy ochr.
x_{7}=3275.5
Adio 3270.5 a 5 i gael 3275.5.
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