Subtract 80/28 from 90/27
1st number: 3 9/27, 2nd number: 2 24/28
90/27 - 80/28 is 10/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 28 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 27 × 28 = 756,
90/27 = 90 × 28/27 × 28 = 2520/756 - Likewise, for the 2nd fraction, since 28 × 27 = 756,
80/28 = 80 × 27/28 × 27 = 2160/756 - Subtract the two like fractions:
2520/756 - 2160/756 = 2520 - 2160/756 = 360/756 - After reducing the fraction, the answer is 10/21
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