Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/15 of 21/45?"
1215 × 2145 is 2875.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15×21/45 12/15×42/45 12/30×21/45 12/15×21/90 36/15×21/45 12/15×63/45 12/45×21/45 60/15×21/45 12/75×21/45 84/15×21/45
© everydaycalculation.com