Solutions by everydaycalculation.com
640 is equivalent to 640
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40 and 6/40 6/40 and 12/40 6/80 and 6/40 6/40 and 6/80 18/40 and 6/40 6/40 and 18/40 30/40 and 6/40 6/40 and 30/40 42/40 and 6/40 6/40 and 42/40
© everydaycalculation.com