Subtract 81/18 from 28/4
1st number: 7 0/4, 2nd number: 4 9/18
28/4 - 81/18 is 5/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
28/4 = 28 × 9/4 × 9 = 252/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
81/18 = 81 × 2/18 × 2 = 162/36 - Subtract the two like fractions:
252/36 - 162/36 = 252 - 162/36 = 90/36 - After reducing the fraction, the answer is 5/2
- In mixed form: 21/2
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