Solve for Ω
\Omega =\frac{R_{2}}{250}
Solve for R_2
R_{2}=250\Omega
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250\Omega =R_{2}
Swap sides so that all variable terms are on the left hand side.
\frac{250\Omega }{250}=\frac{R_{2}}{250}
Divide both sides by 250.
\Omega =\frac{R_{2}}{250}
Dividing by 250 undoes the multiplication by 250.
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