Answer
$y = \dfrac{-Ax+C}{B}$
Work Step by Step
Add $-Ax$ to both sides to find:
$Ax + By + (-Ax) = C + (-Ax)
\\By = -Ax + C$
Divide both sides by $B$ to find:
$\dfrac{By}{B} = \dfrac{-Ax+C}{B}
\\y = \dfrac{-Ax+C}{B}$
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