Add 5/4 and 72/10
1st number: 1 1/4, 2nd number: 7 2/10
5/4 + 72/10 is 169/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
5/4 = 5 × 5/4 × 5 = 25/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
72/10 = 72 × 2/10 × 2 = 144/20 - Add the two like fractions:
25/20 + 144/20 = 25 + 144/20 = 169/20 - So, 5/4 + 72/10 = 169/20
In mixed form: 89/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/4+72/10 5/8+72/10 5/4+72/20 15/4+72/10 5/12+72/10 5/4+72/30 25/4+72/10 5/20+72/10 5/4+72/50 35/4+72/10 5/28+72/10 5/4+72/70