Subtract 81/72 from 84/18
1st number: 4 12/18, 2nd number: 1 9/72
84/18 - 81/72 is 85/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
84/18 = 84 × 4/18 × 4 = 336/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
81/72 = 81 × 1/72 × 1 = 81/72 - Subtract the two like fractions:
336/72 - 81/72 = 336 - 81/72 = 255/72 - After reducing the fraction, the answer is 85/24
- In mixed form: 313/24
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