Subtract 49/42 from 7/21
1st number: 7/21, 2nd number: 1 7/42
7/21 - 49/42 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
7/21 = 7 × 2/21 × 2 = 14/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
49/42 = 49 × 1/42 × 1 = 49/42 - Subtract the two like fractions:
14/42 - 49/42 = 14 - 49/42 = -35/42 - After reducing the fraction, the answer is -5/6
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