Add 24/42 and 54/20
1st number: 24/42, 2nd number: 2 14/20
24/42 + 54/20 is 229/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
24/42 = 24 × 10/42 × 10 = 240/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
54/20 = 54 × 21/20 × 21 = 1134/420 - Add the two like fractions:
240/420 + 1134/420 = 240 + 1134/420 = 1374/420 - 1374/420 simplified gives 229/70
- So, 24/42 + 54/20 = 229/70
In mixed form: 319/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/42+54/20 24/84+54/20 24/42+54/40 72/42+54/20 24/42+54/60