Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 20/42 of 21/30?"
2042 × 2130 is 13.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42×21/30 20/42×42/30 20/84×21/30 20/42×21/60 60/42×21/30 20/42×63/30 20/42×21/90
© everydaycalculation.com