Add 21/18 and 60/72
1st number: 1 3/18, 2nd number: 60/72
21/18 + 60/72 is 2/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
21/18 = 21 × 4/18 × 4 = 84/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
60/72 = 60 × 1/72 × 1 = 60/72 - Add the two like fractions:
84/72 + 60/72 = 84 + 60/72 = 144/72 - 144/72 simplified gives 2/1
- So, 21/18 + 60/72 = 2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+60/72 21/36+60/72 63/18+60/72 21/54+60/72 21/90+60/72