Add 48/63 and 21/81
48/63 + 21/81 is 193/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 63 × 9 = 567,
48/63 = 48 × 9/63 × 9 = 432/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
21/81 = 21 × 7/81 × 7 = 147/567 - Add the two like fractions:
432/567 + 147/567 = 432 + 147/567 = 579/567 - 579/567 simplified gives 193/189
- So, 48/63 + 21/81 = 193/189
In mixed form: 14/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/63+21/81 48/63+42/81 48/63+63/81