Subtract 5/81 from 90/28
1st number: 3 6/28, 2nd number: 5/81
90/28 - 5/81 is 3575/1134.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 28 × 81 = 2268,
90/28 = 90 × 81/28 × 81 = 7290/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
5/81 = 5 × 28/81 × 28 = 140/2268 - Subtract the two like fractions:
7290/2268 - 140/2268 = 7290 - 140/2268 = 7150/2268 - After reducing the fraction, the answer is 3575/1134
- In mixed form: 3173/1134
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