Subtract 42/16 from 21/63
1st number: 21/63, 2nd number: 2 10/16
21/63 - 42/16 is -55/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 16 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 63 × 16 = 1008,
21/63 = 21 × 16/63 × 16 = 336/1008 - Likewise, for the 2nd fraction, since 16 × 63 = 1008,
42/16 = 42 × 63/16 × 63 = 2646/1008 - Subtract the two like fractions:
336/1008 - 2646/1008 = 336 - 2646/1008 = -2310/1008 - After reducing the fraction, the answer is -55/24
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