Solutions by everydaycalculation.com
12 - 45 is -310.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2-8/5 1/4-4/5 1/2-4/10 3/2-4/5 1/2-12/5 1/6-4/5 1/2-4/15 5/2-4/5 1/2-20/5 1/10-4/5 1/2-4/25 7/2-4/5 1/2-28/5 1/14-4/5 1/2-4/35
© everydaycalculation.com