Solutions by everydaycalculation.com
172 - 272 is -172.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72-2/72 1/72-4/72 3/72-2/72 1/72-6/72 5/72-2/72 1/72-10/72 7/72-2/72 1/72-14/72
© everydaycalculation.com