Solutions by everydaycalculation.com
670 + 470 is 17.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/70+4/70 6/70+8/70 18/70+4/70 6/70+12/70 30/70+4/70 6/70+20/70 42/70+4/70 6/70+28/70
© everydaycalculation.com