Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/36 of 12/15?"
2136 × 1215 is 715.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36×12/15 21/36×24/15 21/72×12/15 21/36×12/30 63/36×12/15 21/36×36/15 21/36×12/45 21/36×60/15 21/36×12/75 21/36×84/15
© everydaycalculation.com