Solutions by everydaycalculation.com
1290 - 2790 is -16.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/90-27/90 12/90-54/90 36/90-27/90 12/90-81/90 60/90-27/90 84/90-27/90
© everydaycalculation.com