Subtract 81/80 from 60/20
1st number: 3 0/20, 2nd number: 1 1/80
60/20 - 81/80 is 159/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 20 × 4 = 80,
60/20 = 60 × 4/20 × 4 = 240/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
81/80 = 81 × 1/80 × 1 = 81/80 - Subtract the two like fractions:
240/80 - 81/80 = 240 - 81/80 = 159/80 - In mixed form: 179/80
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