Subtract 5/63 from 42/49
42/49 - 5/63 is 7/9.
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,
42/49 = 42 × 9/49 × 9 = 378/441 - Likewise, for the 2nd fraction, since 63 × 7 = 441,
5/63 = 5 × 7/63 × 7 = 35/441 - Subtract the two like fractions:
378/441 - 35/441 = 378 - 35/441 = 343/441 - After reducing the fraction, the answer is 7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/49-5/63 42/49-10/63 42/98-5/63 42/49-15/63 42/49-25/63 42/49-35/63