Subtract 20/21 from 54/6
1st number: 9 0/6, 2nd number: 20/21
54/6 - 20/21 is 169/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
54/6 = 54 × 7/6 × 7 = 378/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
20/21 = 20 × 2/21 × 2 = 40/42 - Subtract the two like fractions:
378/42 - 40/42 = 378 - 40/42 = 338/42 - After reducing the fraction, the answer is 169/21
- In mixed form: 81/21
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