Add 7/48 and 21/81
7/48 + 21/81 is 175/432.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 81 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 48 × 27 = 1296,
7/48 = 7 × 27/48 × 27 = 189/1296 - Likewise, for the 2nd fraction, since 81 × 16 = 1296,
21/81 = 21 × 16/81 × 16 = 336/1296 - Add the two like fractions:
189/1296 + 336/1296 = 189 + 336/1296 = 525/1296 - 525/1296 simplified gives 175/432
- So, 7/48 + 21/81 = 175/432
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/48+21/81 7/48+42/81 7/96+21/81 21/48+21/81 7/48+63/81 35/48+21/81 49/48+21/81