Subtract 21/16 from 45/49
1st number: 45/49, 2nd number: 1 5/16
45/49 - 21/16 is -309/784.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 16 is 784
Next, find the equivalent fraction of both fractional numbers with denominator 784 - For the 1st fraction, since 49 × 16 = 784,
45/49 = 45 × 16/49 × 16 = 720/784 - Likewise, for the 2nd fraction, since 16 × 49 = 784,
21/16 = 21 × 49/16 × 49 = 1029/784 - Subtract the two like fractions:
720/784 - 1029/784 = 720 - 1029/784 = -309/784
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