Subtract 21/32 from 28/84
28/84 - 21/32 is -31/96.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 84 × 8 = 672,
28/84 = 28 × 8/84 × 8 = 224/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
21/32 = 21 × 21/32 × 21 = 441/672 - Subtract the two like fractions:
224/672 - 441/672 = 224 - 441/672 = -217/672 - After reducing the fraction, the answer is -31/96
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