Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 21/42 of 8/9?"
2142 × 89 is 49.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 21/42×16/9 21/84×8/9 21/42×8/18 63/42×8/9 21/42×24/9 21/42×8/27 21/42×40/9 21/42×8/45 21/42×56/9 21/42×8/63
© everydaycalculation.com