Subtract 90/81 from 4/28
1st number: 4/28, 2nd number: 1 9/81
4/28 - 90/81 is -61/63.
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,
4/28 = 4 × 81/28 × 81 = 324/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
90/81 = 90 × 28/81 × 28 = 2520/2268 - Subtract the two like fractions:
324/2268 - 2520/2268 = 324 - 2520/2268 = -2196/2268 - After reducing the fraction, the answer is -61/63
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