Home > CCAA8 > Chapter 3 Unit 4 > Lesson CCA: 3.3.2 > Problem3-94

3-94.

Solve each equation below for the indicated variable.

1. $3x-2y=18$ for $x$

Add $2y$ to both sides.

$3x=18+2y$

Divide both sides by $3$.

$x=6+\frac{2}{3}\textit{y}$

1. $3x-2y=18$ for $y$

See part (a).

$y=\frac{3}{2}x-9$

1. $rt=d$ for $r$

Divide both sides by $t$.

1. $C=2\pi r$ for $r$

Divide both sides by $2\pi$.

$r=\frac{C}{2\pi}$
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