Subtract 84/5 from 21/20
1st number: 1 1/20, 2nd number: 16 4/5
21/20 - 84/5 is -63/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
21/20 = 21 × 1/20 × 1 = 21/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
84/5 = 84 × 4/5 × 4 = 336/20 - Subtract the two like fractions:
21/20 - 336/20 = 21 - 336/20 = -315/20 - After reducing the fraction, the answer is -63/4
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