Add 42/21 and 2/16
1st number: 2 0/21, 2nd number: 2/16
42/21 + 2/16 is 17/8.
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,
2/16 = 2 × 21/16 × 21 = 42/336 - Add the two like fractions:
672/336 + 42/336 = 672 + 42/336 = 714/336 - 714/336 simplified gives 17/8
- So, 42/21 + 2/16 = 17/8
In mixed form: 21/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+2/16 42/21+4/16 42/21+2/32 42/21+6/16 42/63+2/16 42/21+2/48 42/21+10/16 42/21+2/80 42/21+14/16