Subtract 63/15 from 42/40
1st number: 1 2/40, 2nd number: 4 3/15
42/40 - 63/15 is -63/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
63/15 = 63 × 8/15 × 8 = 504/120 - Subtract the two like fractions:
126/120 - 504/120 = 126 - 504/120 = -378/120 - After reducing the fraction, the answer is -63/20
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