Subtract 18/4 from 15/84
1st number: 15/84, 2nd number: 4 2/4
15/84 - 18/4 is -121/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
15/84 = 15 × 1/84 × 1 = 15/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
18/4 = 18 × 21/4 × 21 = 378/84 - Subtract the two like fractions:
15/84 - 378/84 = 15 - 378/84 = -363/84 - After reducing the fraction, the answer is -121/28
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