Add 20/24 and 42/28
1st number: 20/24, 2nd number: 1 14/28
20/24 + 42/28 is 7/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 28 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 24 × 7 = 168,
20/24 = 20 × 7/24 × 7 = 140/168 - Likewise, for the 2nd fraction, since 28 × 6 = 168,
42/28 = 42 × 6/28 × 6 = 252/168 - Add the two like fractions:
140/168 + 252/168 = 140 + 252/168 = 392/168 - 392/168 simplified gives 7/3
- So, 20/24 + 42/28 = 7/3
In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24+42/28 20/24+84/28 20/48+42/28 20/24+42/56 60/24+42/28 20/72+42/28 20/24+42/84