Subtract 4/7 from 9/27
9/27 - 4/7 is -5/21.
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,
9/27 = 9 × 7/27 × 7 = 63/189 - Likewise, for the 2nd fraction, since 7 × 27 = 189,
4/7 = 4 × 27/7 × 27 = 108/189 - Subtract the two like fractions:
63/189 - 108/189 = 63 - 108/189 = -45/189 - After reducing the fraction, the answer is -5/21
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