Subtract 81/4 from 18/28
1st number: 18/28, 2nd number: 20 1/4
18/28 - 81/4 is -549/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 4 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
18/28 = 18 × 1/28 × 1 = 18/28 - Likewise, for the 2nd fraction, since 4 × 7 = 28,
81/4 = 81 × 7/4 × 7 = 567/28 - Subtract the two like fractions:
18/28 - 567/28 = 18 - 567/28 = -549/28
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