Subtract 84/56 from 21/28
1st number: 21/28, 2nd number: 1 28/56
21/28 - 84/56 is -3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
21/28 = 21 × 2/28 × 2 = 42/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
84/56 = 84 × 1/56 × 1 = 84/56 - Subtract the two like fractions:
42/56 - 84/56 = 42 - 84/56 = -42/56 - After reducing the fraction, the answer is -3/4
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