### Home > PC > Chapter 4 > Lesson 4.2.2 > Problem 4-86

4-86.

Rewrite using one log:

Undo.

Solve for *x*.

1. Divide both sides by 50.

2. Take the log of both sides bring the exponent down.

3. Solve for *x*.

4-86.

Rewrite using one log:

Undo.

Solve for *x*.

1. Divide both sides by 50.

2. Take the log of both sides bring the exponent down.

3. Solve for *x*.