Subtract 3/27 from 45/21
1st number: 2 3/21, 2nd number: 3/27
45/21 - 3/27 is 128/63.
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,
45/21 = 45 × 9/21 × 9 = 405/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
3/27 = 3 × 7/27 × 7 = 21/189 - Subtract the two like fractions:
405/189 - 21/189 = 405 - 21/189 = 384/189 - After reducing the fraction, the answer is 128/63
- In mixed form: 22/63
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