Solutions by everydaycalculation.com
1518 - 1618 is -118.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-16/18 15/18-32/18 15/36-16/18 15/18-16/36 45/18-16/18 15/18-48/18 15/54-16/18 15/18-16/54 75/18-16/18 15/18-80/18 15/90-16/18 15/18-16/90
© everydaycalculation.com