Subtract 42/16 from 21/49
1st number: 21/49, 2nd number: 2 10/16
21/49 - 42/16 is -123/56.
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,
21/49 = 21 × 16/49 × 16 = 336/784 - Likewise, for the 2nd fraction, since 16 × 49 = 784,
42/16 = 42 × 49/16 × 49 = 2058/784 - Subtract the two like fractions:
336/784 - 2058/784 = 336 - 2058/784 = -1722/784 - After reducing the fraction, the answer is -123/56
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