Subtract 20/16 from 42/63
1st number: 42/63, 2nd number: 1 4/16
42/63 - 20/16 is -7/12.
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,
42/63 = 42 × 16/63 × 16 = 672/1008 - Likewise, for the 2nd fraction, since 16 × 63 = 1008,
20/16 = 20 × 63/16 × 63 = 1260/1008 - Subtract the two like fractions:
672/1008 - 1260/1008 = 672 - 1260/1008 = -588/1008 - After reducing the fraction, the answer is -7/12
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