Add 9/28 and 21/49
9/28 + 21/49 is 3/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 49 is 196
Next, find the equivalent fraction of both fractional numbers with denominator 196 - For the 1st fraction, since 28 × 7 = 196,
9/28 = 9 × 7/28 × 7 = 63/196 - Likewise, for the 2nd fraction, since 49 × 4 = 196,
21/49 = 21 × 4/49 × 4 = 84/196 - Add the two like fractions:
63/196 + 84/196 = 63 + 84/196 = 147/196 - 147/196 simplified gives 3/4
- So, 9/28 + 21/49 = 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/28+21/49 9/28+42/49 9/56+21/49 9/28+21/98 27/28+21/49 9/28+63/49 9/84+21/49 45/28+21/49 63/28+21/49