Subtract 21/24 from 42/49
42/49 - 21/24 is -1/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 24 is 1176
Next, find the equivalent fraction of both fractional numbers with denominator 1176 - For the 1st fraction, since 49 × 24 = 1176,
42/49 = 42 × 24/49 × 24 = 1008/1176 - Likewise, for the 2nd fraction, since 24 × 49 = 1176,
21/24 = 21 × 49/24 × 49 = 1029/1176 - Subtract the two like fractions:
1008/1176 - 1029/1176 = 1008 - 1029/1176 = -21/1176 - After reducing the fraction, the answer is -1/56
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