Add 81/4 and 36/30
1st number: 20 1/4, 2nd number: 1 6/30
81/4 + 36/30 is 429/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
81/4 = 81 × 15/4 × 15 = 1215/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
36/30 = 36 × 2/30 × 2 = 72/60 - Add the two like fractions:
1215/60 + 72/60 = 1215 + 72/60 = 1287/60 - 1287/60 simplified gives 429/20
- So, 81/4 + 36/30 = 429/20
In mixed form: 219/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/4+72/30 81/8+36/30 81/4+36/60 81/12+36/30 81/4+36/90 81/20+36/30 81/28+36/30