Subtract 2/32 from 21/81
21/81 - 2/32 is 85/432.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 32 is 2592
Next, find the equivalent fraction of both fractional numbers with denominator 2592 - For the 1st fraction, since 81 × 32 = 2592,
21/81 = 21 × 32/81 × 32 = 672/2592 - Likewise, for the 2nd fraction, since 32 × 81 = 2592,
2/32 = 2 × 81/32 × 81 = 162/2592 - Subtract the two like fractions:
672/2592 - 162/2592 = 672 - 162/2592 = 510/2592 - After reducing the fraction, the answer is 85/432
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