Add 18/21 and 5/63
18/21 + 5/63 is 59/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
18/21 = 18 × 3/21 × 3 = 54/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
5/63 = 5 × 1/63 × 1 = 5/63 - Add the two like fractions:
54/63 + 5/63 = 54 + 5/63 = 59/63 - So, 18/21 + 5/63 = 59/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/21+5/63 18/21+10/63 18/42+5/63 54/21+5/63 18/21+15/63 18/63+5/63 90/21+5/63 18/21+25/63 18/21+35/63