### Home > INT1 > Chapter 7 > Lesson 7.2.1 > Problem7-90

7-90.

Solve the following equations.

1. $\frac { x } { 4 } - \frac { x } { 6 } = \frac { 2 } { 3 }$

Read Math Note box for 3.3.2 to learn about fraction busters. What is the common multiple for $4$, $6$, and $3$?

1. $5^{3x} = 25^{(x+2)}$

Look at problem 3-132, to review how to solve equations with exponents.

Can $25$ be written with a base of $5$?