Subtract 20/21 from 54/14
1st number: 3 12/14, 2nd number: 20/21
54/14 - 20/21 is 61/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
54/14 = 54 × 3/14 × 3 = 162/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Subtract the two like fractions:
162/42 - 40/42 = 162 - 40/42 = 122/42 - After reducing the fraction, the answer is 61/21
- In mixed form: 219/21
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