Subtract 80/28 from 50/21
1st number: 2 8/21, 2nd number: 2 24/28
50/21 - 80/28 is -10/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
50/21 = 50 × 4/21 × 4 = 200/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
80/28 = 80 × 3/28 × 3 = 240/84 - Subtract the two like fractions:
200/84 - 240/84 = 200 - 240/84 = -40/84 - After reducing the fraction, the answer is -10/21
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