Solutions by everydaycalculation.com
1490 - 1590 is -190.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/90-15/90 14/90-30/90 42/90-15/90 14/90-45/90 70/90-15/90 14/90-75/90 98/90-15/90
© everydaycalculation.com