Add 21/18 and 30/16
1st number: 1 3/18, 2nd number: 1 14/16
21/18 + 30/16 is 73/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
21/18 = 21 × 8/18 × 8 = 168/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
30/16 = 30 × 9/16 × 9 = 270/144 - Add the two like fractions:
168/144 + 270/144 = 168 + 270/144 = 438/144 - 438/144 simplified gives 73/24
- So, 21/18 + 30/16 = 73/24
In mixed form: 31/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/18+30/16 21/18+60/16 21/36+30/16 21/18+30/32 63/18+30/16 21/18+90/16 21/54+30/16 21/18+30/48 21/90+30/16 21/18+30/80