### Home > CC4 > Chapter 10 > Lesson 10.1.1 > Problem10-15

10-15.

Solve each of the following equations for the indicated variable. Homework Help ✎

1. Solve for d: I = $\frac { 3 } { 4 }$md + 18

Start by subtracting 18 from both sides.

2. Solve for q: S = 25p + q

q = S − 25p

3. Solve for n: PV = nRT

• To solve for n you will need to divide both sides by RT.