Subtract 49/56 from 21/27
21/27 - 49/56 is -7/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 56 is 1512
Next, find the equivalent fraction of both fractional numbers with denominator 1512 - For the 1st fraction, since 27 × 56 = 1512,
21/27 = 21 × 56/27 × 56 = 1176/1512 - Likewise, for the 2nd fraction, since 56 × 27 = 1512,
49/56 = 49 × 27/56 × 27 = 1323/1512 - Subtract the two like fractions:
1176/1512 - 1323/1512 = 1176 - 1323/1512 = -147/1512 - After reducing the fraction, the answer is -7/72
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