Solutions by everydaycalculation.com
390 - 890 is -118.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90-8/90 3/90-16/90 9/90-8/90 3/90-24/90 15/90-8/90 3/90-40/90 21/90-8/90 3/90-56/90
© everydaycalculation.com