Subtract 21/14 from 28/42
1st number: 28/42, 2nd number: 1 7/14
28/42 - 21/14 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
28/42 = 28 × 1/42 × 1 = 28/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
21/14 = 21 × 3/14 × 3 = 63/42 - Subtract the two like fractions:
28/42 - 63/42 = 28 - 63/42 = -35/42 - After reducing the fraction, the answer is -5/6
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