Question

How do you evaluate `\frac { 12} { 1} \cdot \frac { 9} { 12}`?

Answer 1

See a solution process below:

Explanation:

First, cancel common terms in the numerator and denominator:

`12/1 * 9/12 = color(red)(cancel(color(black)(12)))/1 * 9/color(red)(cancel(color(black)(12))) = 1/1 * 9/1 = 1 * 9 = 9`