Solutions by everydaycalculation.com
718 - 1218 is -518.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18-12/18 7/18-24/18 7/36-12/18 7/18-12/36 21/18-12/18 7/18-36/18 7/54-12/18 7/18-12/54 35/18-12/18 7/18-60/18 7/90-12/18 7/18-12/90 49/18-12/18 7/18-84/18
© everydaycalculation.com