Subtract 90/27 from 4/28
1st number: 4/28, 2nd number: 3 9/27
4/28 - 90/27 is -67/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 28 × 27 = 756,
4/28 = 4 × 27/28 × 27 = 108/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
90/27 = 90 × 28/27 × 28 = 2520/756 - Subtract the two like fractions:
108/756 - 2520/756 = 108 - 2520/756 = -2412/756 - After reducing the fraction, the answer is -67/21
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