Subtract 81/72 from 4/5
1st number: 4/5, 2nd number: 1 9/72
4/5 - 81/72 is -13/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
4/5 = 4 × 72/5 × 72 = 288/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Subtract the two like fractions:
288/360 - 405/360 = 288 - 405/360 = -117/360 - After reducing the fraction, the answer is -13/40
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