Add 24/42 and 21/4
1st number: 24/42, 2nd number: 5 1/4
24/42 + 21/4 is 163/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
24/42 = 24 × 2/42 × 2 = 48/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
21/4 = 21 × 21/4 × 21 = 441/84 - Add the two like fractions:
48/84 + 441/84 = 48 + 441/84 = 489/84 - 489/84 simplified gives 163/28
- So, 24/42 + 21/4 = 163/28
In mixed form: 523/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42+21/4 24/42+42/4 24/84+21/4 24/42+21/8 72/42+21/4 24/42+63/4 24/42+21/12 24/42+21/20 24/42+21/28