Solutions by everydaycalculation.com
This multiplication involving fractions can also be rephrased as "What is 42/90 of 5/7?"
4290 × 57 is 13.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/90×5/7 42/90×10/7 42/90×5/14 42/90×15/7 42/90×5/21 42/90×25/7 42/90×5/35 42/90×35/7 42/90×5/49
© everydaycalculation.com