Add 21/2 and 30/16
1st number: 10 1/2, 2nd number: 1 14/16
21/2 + 30/16 is 99/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 2 × 8 = 16,
21/2 = 21 × 8/2 × 8 = 168/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
30/16 = 30 × 1/16 × 1 = 30/16 - Add the two like fractions:
168/16 + 30/16 = 168 + 30/16 = 198/16 - 198/16 simplified gives 99/8
- So, 21/2 + 30/16 = 99/8
In mixed form: 123/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+30/16 21/2+60/16 21/4+30/16 21/2+30/32 63/2+30/16 21/2+90/16 21/6+30/16 21/2+30/48 21/10+30/16 21/2+30/80 21/14+30/16