### Home > CCA > Chapter 3 > Lesson 3.3.2 > Problem3-94

3-94.

Solve each equation below for the indicated variable. Homework Help ✎

1. $3x−2y=18 \text{ for } x$

• Add 2y to both sides.
3x = 18 + 2y

• Divide both sides by 3.

• $x=6+\frac{2}{3}\textit{y}$

1. $3x−2y=18 \text { for }y$

• See part (a).

• $y=\frac{3}{2}x-9$

1. $rt = d \text { for } r$

• Divide both sides by t.

1. $rt=d \text { for }r$

• Divide both sides by 2π.

• $r=\frac{C}{2\pi}$