Subtract 20/32 from 21/27
21/27 - 20/32 is 11/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 32 is 864
Next, find the equivalent fraction of both fractional numbers with denominator 864 - For the 1st fraction, since 27 × 32 = 864,
21/27 = 21 × 32/27 × 32 = 672/864 - Likewise, for the 2nd fraction, since 32 × 27 = 864,
20/32 = 20 × 27/32 × 27 = 540/864 - Subtract the two like fractions:
672/864 - 540/864 = 672 - 540/864 = 132/864 - After reducing the fraction, the answer is 11/72
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