Subtract 20/27 from 75/21
1st number: 3 12/21, 2nd number: 20/27
75/21 - 20/27 is 535/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 21 × 9 = 189,
75/21 = 75 × 9/21 × 9 = 675/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
20/27 = 20 × 7/27 × 7 = 140/189 - Subtract the two like fractions:
675/189 - 140/189 = 675 - 140/189 = 535/189 - In mixed form: 2157/189
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