Add 30/60 and 81/7
1st number: 30/60, 2nd number: 11 4/7
30/60 + 81/7 is 169/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 7 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
30/60 = 30 × 7/60 × 7 = 210/420 - Likewise, for the 2nd fraction, since 7 × 60 = 420,
81/7 = 81 × 60/7 × 60 = 4860/420 - Add the two like fractions:
210/420 + 4860/420 = 210 + 4860/420 = 5070/420 - 5070/420 simplified gives 169/14
- So, 30/60 + 81/7 = 169/14
In mixed form: 121/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/60+81/14 90/60+81/7 30/60+81/21 30/60+81/35 30/60+81/49