## Intermediate Algebra (12th Edition)

1. Given: $\frac{x}{5} - \frac{x}{4}$ = 1 2. Multiply both sides by Least Common Denominator: 20($\frac{x}{5} - \frac{x}{4}$) = 1(20) 3. Distribute: 4x - 5x = 20 4. Simplify: -x = 20 x = -20