Add 54/10 and 21/4
1st number: 5 4/10, 2nd number: 5 1/4
54/10 + 21/4 is 213/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 4 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
54/10 = 54 × 2/10 × 2 = 108/20 - Likewise, for the 2nd fraction, since 4 × 5 = 20,
21/4 = 21 × 5/4 × 5 = 105/20 - Add the two like fractions:
108/20 + 105/20 = 108 + 105/20 = 213/20 - So, 54/10 + 21/4 = 213/20
In mixed form: 1013/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/10+42/4 54/20+21/4 54/10+21/8 54/10+63/4 54/30+21/4 54/10+21/12 54/50+21/4 54/10+21/20 54/70+21/4 54/10+21/28