Subtract 36/20 from 10/21
1st number: 10/21, 2nd number: 1 16/20
10/21 - 36/20 is -139/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
10/21 = 10 × 20/21 × 20 = 200/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
36/20 = 36 × 21/20 × 21 = 756/420 - Subtract the two like fractions:
200/420 - 756/420 = 200 - 756/420 = -556/420 - After reducing the fraction, the answer is -139/105
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