Add 42/21 and 10/16
1st number: 2 0/21, 2nd number: 10/16
42/21 + 10/16 is 21/8.
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,
10/16 = 10 × 21/16 × 21 = 210/336 - Add the two like fractions:
672/336 + 210/336 = 672 + 210/336 = 882/336 - 882/336 simplified gives 21/8
- So, 42/21 + 10/16 = 21/8
In mixed form: 25/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+10/16 42/21+20/16 42/21+10/32 42/21+30/16 42/63+10/16 42/21+10/48 42/21+50/16 42/21+10/80 42/21+70/16