### Home > INT1 > Chapter 6 > Lesson 6.1.1 > Problem6-7

6-7.

Solve each equation 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 $y$

1. $C = 2πr$ for $r$

Divide both sides by $2π$.

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