Subtract 18/63 from 72/49
1st number: 1 23/49, 2nd number: 18/63
72/49 - 18/63 is 58/49.
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,
72/49 = 72 × 9/49 × 9 = 648/441 - Likewise, for the 2nd fraction, since 63 × 7 = 441,
18/63 = 18 × 7/63 × 7 = 126/441 - Subtract the two like fractions:
648/441 - 126/441 = 648 - 126/441 = 522/441 - After reducing the fraction, the answer is 58/49
- In mixed form: 19/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/49-36/63 72/98-18/63 72/49-54/63 72/49-90/63