Solutions by everydaycalculation.com
870 - 970 is -170.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/70-9/70 8/70-18/70 24/70-9/70 8/70-27/70 40/70-9/70 8/70-45/70 56/70-9/70 8/70-63/70
© everydaycalculation.com