Add 42/21 and 42/16
1st number: 2 0/21, 2nd number: 2 10/16
42/21 + 42/16 is 37/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
42/21 = 42 × 16/21 × 16 = 672/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
42/16 = 42 × 21/16 × 21 = 882/336 - Add the two like fractions:
672/336 + 882/336 = 672 + 882/336 = 1554/336 - 1554/336 simplified gives 37/8
- So, 42/21 + 42/16 = 37/8
In mixed form: 45/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+42/16 42/21+84/16 42/21+42/32 42/63+42/16 42/21+42/48 42/21+42/80