Add 21/48 and 5/20
21/48 + 5/20 is 11/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 20 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
21/48 = 21 × 5/48 × 5 = 105/240 - Likewise, for the 2nd fraction, since 20 × 12 = 240,
5/20 = 5 × 12/20 × 12 = 60/240 - Add the two like fractions:
105/240 + 60/240 = 105 + 60/240 = 165/240 - 165/240 simplified gives 11/16
- So, 21/48 + 5/20 = 11/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/48+5/20 21/48+10/20 21/96+5/20 21/48+5/40 63/48+5/20 21/48+15/20 21/48+5/60 21/48+25/20 21/48+35/20