Add 21/36 and 25/63
21/36 + 25/63 is 247/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
21/36 = 21 × 7/36 × 7 = 147/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
25/63 = 25 × 4/63 × 4 = 100/252 - Add the two like fractions:
147/252 + 100/252 = 147 + 100/252 = 247/252 - So, 21/36 + 25/63 = 247/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/36+25/63 21/36+50/63 21/72+25/63 63/36+25/63 21/36+75/63