Subtract 28/27 from 15/7
1st number: 2 1/7, 2nd number: 1 1/27
15/7 - 28/27 is 209/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 7 × 27 = 189,
15/7 = 15 × 27/7 × 27 = 405/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
28/27 = 28 × 7/27 × 7 = 196/189 - Subtract the two like fractions:
405/189 - 196/189 = 405 - 196/189 = 209/189 - In mixed form: 120/189
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