Solutions by everydaycalculation.com
1090 - 6090 is -59.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90-60/90 30/90-60/90 50/90-60/90 70/90-60/90
© everydaycalculation.com