Solve for Q
Q=\frac{250}{r_{25}+25}
r_{25}\neq -25
Solve for r_25
r_{25}=-25+\frac{250}{Q}
Q\neq 0
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1r_{25}Q+25Q=250
Add 25Q to both sides.
Qr_{25}+25Q=250
Reorder the terms.
\left(r_{25}+25\right)Q=250
Combine all terms containing Q.
\frac{\left(r_{25}+25\right)Q}{r_{25}+25}=\frac{250}{r_{25}+25}
Divide both sides by r_{25}+25.
Q=\frac{250}{r_{25}+25}
Dividing by r_{25}+25 undoes the multiplication by r_{25}+25.
Qr_{25}=-25Q+250
Reorder the terms.
Qr_{25}=250-25Q
The equation is in standard form.
\frac{Qr_{25}}{Q}=\frac{250-25Q}{Q}
Divide both sides by Q.
r_{25}=\frac{250-25Q}{Q}
Dividing by Q undoes the multiplication by Q.
r_{25}=-25+\frac{250}{Q}
Divide 250-25Q by Q.
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