Subtract 49/32 from 21/27
1st number: 21/27, 2nd number: 1 17/32
21/27 - 49/32 is -217/288.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 32 is 864
Next, find the equivalent fraction of both fractional numbers with denominator 864 - For the 1st fraction, since 27 × 32 = 864,
21/27 = 21 × 32/27 × 32 = 672/864 - Likewise, for the 2nd fraction, since 32 × 27 = 864,
49/32 = 49 × 27/32 × 27 = 1323/864 - Subtract the two like fractions:
672/864 - 1323/864 = 672 - 1323/864 = -651/864 - After reducing the fraction, the answer is -217/288
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/27-49/32 21/27-98/32 21/54-49/32 21/27-49/64 63/27-49/32 21/81-49/32 21/27-49/96