Subtract 42/48 from 45/63
45/63 - 42/48 is -9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 48 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 63 × 16 = 1008,
45/63 = 45 × 16/63 × 16 = 720/1008 - Likewise, for the 2nd fraction, since 48 × 21 = 1008,
42/48 = 42 × 21/48 × 21 = 882/1008 - Subtract the two like fractions:
720/1008 - 882/1008 = 720 - 882/1008 = -162/1008 - After reducing the fraction, the answer is -9/56
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