Subtract 84/63 from 18/15
1st number: 1 3/15, 2nd number: 1 21/63
18/15 - 84/63 is -2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
18/15 = 18 × 21/15 × 21 = 378/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
84/63 = 84 × 5/63 × 5 = 420/315 - Subtract the two like fractions:
378/315 - 420/315 = 378 - 420/315 = -42/315 - After reducing the fraction, the answer is -2/15
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