Subtract 10/21 from 45/20
1st number: 2 5/20, 2nd number: 10/21
45/20 - 10/21 is 149/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
45/20 = 45 × 21/20 × 21 = 945/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
10/21 = 10 × 20/21 × 20 = 200/420 - Subtract the two like fractions:
945/420 - 200/420 = 945 - 200/420 = 745/420 - After reducing the fraction, the answer is 149/84
- In mixed form: 165/84
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