Subtract 63/42 from 24/27
1st number: 24/27, 2nd number: 1 21/42
24/27 - 63/42 is -11/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 42 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 27 × 14 = 378,
24/27 = 24 × 14/27 × 14 = 336/378 - Likewise, for the 2nd fraction, since 42 × 9 = 378,
63/42 = 63 × 9/42 × 9 = 567/378 - Subtract the two like fractions:
336/378 - 567/378 = 336 - 567/378 = -231/378 - After reducing the fraction, the answer is -11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/27-63/42 24/54-63/42 24/27-63/84 72/27-63/42 24/81-63/42