Solutions by everydaycalculation.com
15 - 57 is -1835.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5-5/7 1/5-10/7 1/10-5/7 1/5-5/14 3/5-5/7 1/5-15/7 1/15-5/7 1/5-5/21 1/5-25/7 1/25-5/7 1/5-5/35 7/5-5/7 1/5-35/7 1/35-5/7 1/5-5/49
© everydaycalculation.com