Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 12/21 of 15/35?"
1221 × 1535 is 1249.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/21×15/35 12/21×30/35 12/42×15/35 12/21×15/70 36/21×15/35 12/21×45/35 12/63×15/35 60/21×15/35 12/21×75/35 84/21×15/35
© everydaycalculation.com