Solutions by everydaycalculation.com
1242 - 1442 is -121.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42-14/42 12/42-28/42 12/84-14/42 12/42-14/84 36/42-14/42 60/42-14/42 12/42-70/42 84/42-14/42 12/42-98/42
© everydaycalculation.com