Add 72/7 and 48/18
1st number: 10 2/7, 2nd number: 2 12/18
72/7 + 48/18 is 272/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 7 × 18 = 126,
72/7 = 72 × 18/7 × 18 = 1296/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
48/18 = 48 × 7/18 × 7 = 336/126 - Add the two like fractions:
1296/126 + 336/126 = 1296 + 336/126 = 1632/126 - 1632/126 simplified gives 272/21
- So, 72/7 + 48/18 = 272/21
In mixed form: 1220/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/7+96/18 72/14+48/18 72/7+48/36 72/21+48/18 72/7+48/54 72/35+48/18 72/7+48/90 72/49+48/18