Solutions by everydaycalculation.com
3070 + 2070 is 57.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70+20/70 30/70+40/70 90/70+20/70 30/70+60/70
© everydaycalculation.com