Solutions by everydaycalculation.com
642 - 2542 is -1942.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42-25/42 6/42-50/42 6/84-25/42 6/42-25/84 18/42-25/42 6/42-75/42 30/42-25/42
© everydaycalculation.com