Solutions by everydaycalculation.com
2190 - 390 is 15.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90-3/90 21/90-6/90 63/90-3/90 21/90-9/90 21/90-15/90 21/90-21/90
© everydaycalculation.com