Add 42/4 and 21/16
1st number: 10 2/4, 2nd number: 1 5/16
42/4 + 21/16 is 189/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 16 is 16
Next, find the equivalent fraction of both fractional numbers with denominator 16 - For the 1st fraction, since 4 × 4 = 16,
42/4 = 42 × 4/4 × 4 = 168/16 - Likewise, for the 2nd fraction, since 16 × 1 = 16,
21/16 = 21 × 1/16 × 1 = 21/16 - Add the two like fractions:
168/16 + 21/16 = 168 + 21/16 = 189/16 - So, 42/4 + 21/16 = 189/16
In mixed form: 1113/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/4+21/16 42/4+42/16 42/8+21/16 42/4+21/32 42/4+63/16 42/12+21/16 42/4+21/48 42/20+21/16 42/4+21/80 42/28+21/16