Solutions by everydaycalculation.com
770 + 2070 is 2770.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/70+20/70 7/70+40/70 21/70+20/70 7/70+60/70 35/70+20/70 49/70+20/70
© everydaycalculation.com