Subtract 81/5 from 7/80
1st number: 7/80, 2nd number: 16 1/5
7/80 - 81/5 is -1289/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 5 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
7/80 = 7 × 1/80 × 1 = 7/80 - Likewise, for the 2nd fraction, since 5 × 16 = 80,
81/5 = 81 × 16/5 × 16 = 1296/80 - Subtract the two like fractions:
7/80 - 1296/80 = 7 - 1296/80 = -1289/80
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