Add 42/21 and 4/16
1st number: 2 0/21, 2nd number: 4/16
42/21 + 4/16 is 9/4.
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,
4/16 = 4 × 21/16 × 21 = 84/336 - Add the two like fractions:
672/336 + 84/336 = 672 + 84/336 = 756/336 - 756/336 simplified gives 9/4
- So, 42/21 + 4/16 = 9/4
In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+4/16 42/21+8/16 42/21+4/32 42/21+12/16 42/63+4/16 42/21+4/48 42/21+20/16 42/21+4/80 42/21+28/16