Subtract 63/6 from 81/20
1st number: 4 1/20, 2nd number: 10 3/6
81/20 - 63/6 is -129/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 6 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
81/20 = 81 × 3/20 × 3 = 243/60 - Likewise, for the 2nd fraction, since 6 × 10 = 60,
63/6 = 63 × 10/6 × 10 = 630/60 - Subtract the two like fractions:
243/60 - 630/60 = 243 - 630/60 = -387/60 - After reducing the fraction, the answer is -129/20
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