Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 6/15 of 15/21?"
615 × 1521 is 27.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/15×15/21 6/15×30/21 6/30×15/21 6/15×15/42 18/15×15/21 6/15×45/21 6/45×15/21 6/15×15/63 30/15×15/21 6/15×75/21 6/75×15/21 42/15×15/21
© everydaycalculation.com