Subtract 81/21 from 63/32
1st number: 1 31/32, 2nd number: 3 18/21
63/32 - 81/21 is -423/224.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 21 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 32 × 21 = 672,
63/32 = 63 × 21/32 × 21 = 1323/672 - Likewise, for the 2nd fraction, since 21 × 32 = 672,
81/21 = 81 × 32/21 × 32 = 2592/672 - Subtract the two like fractions:
1323/672 - 2592/672 = 1323 - 2592/672 = -1269/672 - After reducing the fraction, the answer is -423/224
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