Subtract 21/16 from 40/63
1st number: 40/63, 2nd number: 1 5/16
40/63 - 21/16 is -683/1008.
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,
40/63 = 40 × 16/63 × 16 = 640/1008 - Likewise, for the 2nd fraction, since 16 × 63 = 1008,
21/16 = 21 × 63/16 × 63 = 1323/1008 - Subtract the two like fractions:
640/1008 - 1323/1008 = 640 - 1323/1008 = -683/1008
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