Subtract 20/32 from 8/28
8/28 - 20/32 is -19/56.
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,
8/28 = 8 × 8/28 × 8 = 64/224 - Likewise, for the 2nd fraction, since 32 × 7 = 224,
20/32 = 20 × 7/32 × 7 = 140/224 - Subtract the two like fractions:
64/224 - 140/224 = 64 - 140/224 = -76/224 - After reducing the fraction, the answer is -19/56
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