Add 45/21 and 16/28
1st number: 2 3/21, 2nd number: 16/28
45/21 + 16/28 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
45/21 = 45 × 4/21 × 4 = 180/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
16/28 = 16 × 3/28 × 3 = 48/84 - Add the two like fractions:
180/84 + 48/84 = 180 + 48/84 = 228/84 - 228/84 simplified gives 19/7
- So, 45/21 + 16/28 = 19/7
In mixed form: 25/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+16/28 45/21+32/28 45/42+16/28 45/21+16/56 45/21+48/28 45/63+16/28 45/21+16/84 45/21+80/28