Subtract 27/32 from 21/28
21/28 - 27/32 is -3/32.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 32 is 224
Next, find the equivalent fraction of both fractional numbers with denominator 224 - For the 1st fraction, since 28 × 8 = 224,
21/28 = 21 × 8/28 × 8 = 168/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
27/32 = 27 × 7/32 × 7 = 189/224 - Subtract the two like fractions:
168/224 - 189/224 = 168 - 189/224 = -21/224 - After reducing the fraction, the answer is -3/32
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