Subtract 54/21 from 81/32
1st number: 2 17/32, 2nd number: 2 12/21
81/32 - 54/21 is -9/224.
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,
81/32 = 81 × 21/32 × 21 = 1701/672 - Likewise, for the 2nd fraction, since 21 × 32 = 672,
54/21 = 54 × 32/21 × 32 = 1728/672 - Subtract the two like fractions:
1701/672 - 1728/672 = 1701 - 1728/672 = -27/672 - After reducing the fraction, the answer is -9/224
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