Subtract 7/8 from 20/28
20/28 - 7/8 is -9/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
20/28 = 20 × 2/28 × 2 = 40/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
7/8 = 7 × 7/8 × 7 = 49/56 - Subtract the two like fractions:
40/56 - 49/56 = 40 - 49/56 = -9/56
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