Add 21/60 and 81/75
1st number: 21/60, 2nd number: 1 6/75
21/60 + 81/75 is 143/100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 60 × 5 = 300,
21/60 = 21 × 5/60 × 5 = 105/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
81/75 = 81 × 4/75 × 4 = 324/300 - Add the two like fractions:
105/300 + 324/300 = 105 + 324/300 = 429/300 - 429/300 simplified gives 143/100
- So, 21/60 + 81/75 = 143/100
In mixed form: 143/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/60+81/75 63/60+81/75