Solutions by everydaycalculation.com
312 - 13 is -112.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/12-1/3 3/12-2/3 3/24-1/3 3/12-1/6 9/12-1/3 3/36-1/3 3/12-1/9 15/12-1/3 3/12-5/3 3/60-1/3 3/12-1/15 21/12-1/3 3/12-7/3 3/84-1/3 3/12-1/21
© everydaycalculation.com