Subtract 20/63 from 42/15
1st number: 2 12/15, 2nd number: 20/63
42/15 - 20/63 is 782/315.
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,
20/63 = 20 × 5/63 × 5 = 100/315 - Subtract the two like fractions:
882/315 - 100/315 = 882 - 100/315 = 782/315 - In mixed form: 2152/315
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