Subtract 63/32 from 20/21
1st number: 20/21, 2nd number: 1 31/32
20/21 - 63/32 is -683/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 21 × 32 = 672,
20/21 = 20 × 32/21 × 32 = 640/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
63/32 = 63 × 21/32 × 21 = 1323/672 - Subtract the two like fractions:
640/672 - 1323/672 = 640 - 1323/672 = -683/672
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