Add 21/16 and 36/18
1st number: 1 5/16, 2nd number: 2 0/18
21/16 + 36/18 is 53/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
21/16 = 21 × 9/16 × 9 = 189/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
36/18 = 36 × 8/18 × 8 = 288/144 - Add the two like fractions:
189/144 + 288/144 = 189 + 288/144 = 477/144 - 477/144 simplified gives 53/16
- So, 21/16 + 36/18 = 53/16
In mixed form: 35/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/16+36/18 21/16+72/18 21/32+36/18 63/16+36/18 21/48+36/18 21/16+36/54 21/80+36/18 21/16+36/90