CPM Homework Help : INT1 Problem 7-90

Solve the following equations.

$\frac { x } { 4 } - \frac { x } { 6 } = \frac { 2 } { 3 }$
Hint (a):
Read Math Note box for 3.3.2 to learn about fraction busters. What is the common multiple for $4$ , $6$ , and $3$ ?

$5^{3x} = 25^{(x+2)}$
Hint (b):
Look at problem 3-132, to review how to solve equations with exponents.
More Help (b):
Can $25$ be written with a base of $5$ ?