Subtract 80/36 from 21/84
1st number: 21/84, 2nd number: 2 8/36
21/84 - 80/36 is -71/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 36 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
21/84 = 21 × 3/84 × 3 = 63/252 - Likewise, for the 2nd fraction, since 36 × 7 = 252,
80/36 = 80 × 7/36 × 7 = 560/252 - Subtract the two like fractions:
63/252 - 560/252 = 63 - 560/252 = -497/252 - After reducing the fraction, the answer is -71/36
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