Subtract 21/63 from 24/49
24/49 - 21/63 is 23/147.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 63 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 49 × 9 = 441,
24/49 = 24 × 9/49 × 9 = 216/441 - Likewise, for the 2nd fraction, since 63 × 7 = 441,
21/63 = 21 × 7/63 × 7 = 147/441 - Subtract the two like fractions:
216/441 - 147/441 = 216 - 147/441 = 69/441 - After reducing the fraction, the answer is 23/147
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/49-21/63 24/49-42/63 24/98-21/63 72/49-21/63