Subtract 63/45 from 15/42
1st number: 15/42, 2nd number: 1 18/45
15/42 - 63/45 is -73/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
15/42 = 15 × 15/42 × 15 = 225/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
63/45 = 63 × 14/45 × 14 = 882/630 - Subtract the two like fractions:
225/630 - 882/630 = 225 - 882/630 = -657/630 - After reducing the fraction, the answer is -73/70
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