Add 30/16 and 21/5
1st number: 1 14/16, 2nd number: 4 1/5
30/16 + 21/5 is 243/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
30/16 = 30 × 5/16 × 5 = 150/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
21/5 = 21 × 16/5 × 16 = 336/80 - Add the two like fractions:
150/80 + 336/80 = 150 + 336/80 = 486/80 - 486/80 simplified gives 243/40
- So, 30/16 + 21/5 = 243/40
In mixed form: 63/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/16+21/5 30/16+42/5 30/32+21/5 30/16+21/10 90/16+21/5 30/16+63/5 30/48+21/5 30/16+21/15 30/80+21/5 30/16+21/25 30/16+21/35