Subtract 20/54 from 54/21
1st number: 2 12/21, 2nd number: 20/54
54/21 - 20/54 is 416/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 54 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 21 × 18 = 378,
54/21 = 54 × 18/21 × 18 = 972/378 - Likewise, for the 2nd fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Subtract the two like fractions:
972/378 - 140/378 = 972 - 140/378 = 832/378 - After reducing the fraction, the answer is 416/189
- In mixed form: 238/189
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