# RATL 2 | Lesson 4 | Practice (Solving Rational Equations)

1) To solve simple rational equations, you can use cross multiplication. Use cross multiplication to solve the equations below.

a) $$\Large \frac{x-1}{5}=\frac{9}{7}$$

b) $$\Large \frac{x+2}{3}=\frac{4}{9}$$

2) What about more complicated equations?

Try finding common denominators as a first step in solving the next equations. Once all of the terms have a common denominator, solve the equation created by the numerators.

a) $$\Large \frac{3}{x+4}+\frac{1}{4}=\normalsize 5$$

b) $$\Large \frac{x}{x-5}+\frac{3}{x+2}=\frac{7x}{x^2-3x-10}$$

Check solutions here.