Solutions by everydaycalculation.com
2170 + 670 is 2770.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70+6/70 21/70+12/70 63/70+6/70 21/70+18/70 21/70+30/70 21/70+42/70
© everydaycalculation.com