Subtract 4/21 from 45/27
1st number: 1 18/27, 2nd number: 4/21
45/27 - 4/21 is 31/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 21 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
45/27 = 45 × 7/27 × 7 = 315/189 - Likewise, for the 2nd fraction, since 21 × 9 = 189,
4/21 = 4 × 9/21 × 9 = 36/189 - Subtract the two like fractions:
315/189 - 36/189 = 315 - 36/189 = 279/189 - After reducing the fraction, the answer is 31/21
- In mixed form: 110/21
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