Add 2/16 and 21/40
2/16 + 21/40 is 13/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
2/16 = 2 × 5/16 × 5 = 10/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
21/40 = 21 × 2/40 × 2 = 42/80 - Add the two like fractions:
10/80 + 42/80 = 10 + 42/80 = 52/80 - 52/80 simplified gives 13/20
- So, 2/16 + 21/40 = 13/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/16+21/40 2/16+42/40 2/32+21/40 2/16+21/80 6/16+21/40 2/16+63/40 2/48+21/40 10/16+21/40 2/80+21/40 14/16+21/40