Subtract 42/7 from 15/27
1st number: 15/27, 2nd number: 6 0/7
15/27 - 42/7 is -49/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 7 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
15/27 = 15 × 7/27 × 7 = 105/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
42/7 = 42 × 27/7 × 27 = 1134/189 - Subtract the two like fractions:
105/189 - 1134/189 = 105 - 1134/189 = -1029/189 - After reducing the fraction, the answer is -49/9
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