Solutions by everydaycalculation.com
921 + 321 is 47.
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/21+3/21 9/21+6/21 9/42+3/21 9/21+3/42 27/21+3/21 9/21+9/21 9/63+3/21 9/21+3/63 45/21+3/21 9/21+15/21 63/21+3/21
© everydaycalculation.com