Solutions by everydaycalculation.com
915 - 1015 is -115.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15-10/15 9/15-20/15 9/30-10/15 9/15-10/30 27/15-10/15 9/15-30/15 9/45-10/15 9/15-10/45 45/15-10/15 9/15-50/15 9/75-10/15 9/15-10/75 63/15-10/15 9/15-70/15
© everydaycalculation.com