Add 42/16 and 21/10
1st number: 2 10/16, 2nd number: 2 1/10
42/16 + 21/10 is 189/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
42/16 = 42 × 5/16 × 5 = 210/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
21/10 = 21 × 8/10 × 8 = 168/80 - Add the two like fractions:
210/80 + 168/80 = 210 + 168/80 = 378/80 - 378/80 simplified gives 189/40
- So, 42/16 + 21/10 = 189/40
In mixed form: 429/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/16+21/10 42/16+42/10 42/32+21/10 42/16+21/20 42/16+63/10 42/48+21/10 42/16+21/30 42/80+21/10 42/16+21/50 42/16+21/70