Solutions by everydaycalculation.com
642 + 4042 is 2321.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42+40/42 6/42+80/42 6/84+40/42 6/42+40/84 18/42+40/42 30/42+40/42
© everydaycalculation.com