Add 3/18 and 21/16
1st number: 3/18, 2nd number: 1 5/16
3/18 + 21/16 is 71/48.
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,
3/18 = 3 × 8/18 × 8 = 24/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144 - Add the two like fractions:
24/144 + 189/144 = 24 + 189/144 = 213/144 - 213/144 simplified gives 71/48
- So, 3/18 + 21/16 = 71/48
In mixed form: 123/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+21/16 3/18+42/16 3/36+21/16 3/18+21/32 9/18+21/16 3/18+63/16 3/54+21/16 3/18+21/48 15/18+21/16 3/90+21/16 3/18+21/80 21/18+21/16