## Introductory Algebra for College Students (7th Edition)

$\displaystyle \frac{a}{c}$
Fundamental Principle of Fractions: The value of a fraction does not change if both the numerator and the denominator are divided (or multiplied) by the same nonzero number. So, $\displaystyle \frac{a\cdot c}{b\cdot c}=\frac{a}{c}.$