Subtract 18/63 from 42/15
1st number: 2 12/15, 2nd number: 18/63
42/15 - 18/63 is 88/35.
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,
42/15 = 42 × 21/15 × 21 = 882/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
18/63 = 18 × 5/63 × 5 = 90/315 - Subtract the two like fractions:
882/315 - 90/315 = 882 - 90/315 = 792/315 - After reducing the fraction, the answer is 88/35
- In mixed form: 218/35
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