Solutions by everydaycalculation.com
170 - 1570 is -15.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/70-15/70 1/70-30/70 3/70-15/70 1/70-45/70 5/70-15/70 1/70-75/70 7/70-15/70
© everydaycalculation.com