Subtract 81/72 from 8/4
1st number: 2 0/4, 2nd number: 1 9/72
8/4 - 81/72 is 7/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
8/4 = 8 × 18/4 × 18 = 144/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Subtract the two like fractions:
144/72 - 81/72 = 144 - 81/72 = 63/72 - After reducing the fraction, the answer is 7/8
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