Solutions by everydaycalculation.com
18 - 818 is -2372.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/8-8/18 1/8-16/18 1/16-8/18 1/8-8/36 3/8-8/18 1/8-24/18 1/24-8/18 1/8-8/54 5/8-8/18 1/8-40/18 1/40-8/18 1/8-8/90 7/8-8/18 1/8-56/18 1/56-8/18
© everydaycalculation.com