Solutions by everydaycalculation.com
421 + 1421 is 67.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21+14/21 4/21+28/21 4/42+14/21 4/21+14/42 12/21+14/21 4/21+42/21 4/63+14/21 4/21+14/63 20/21+14/21 4/21+70/21 28/21+14/21 4/21+98/21
© everydaycalculation.com