Subtract 18/27 from 3/63
3/63 - 18/27 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 27 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 63 × 3 = 189,
3/63 = 3 × 3/63 × 3 = 9/189 - Likewise, for the 2nd fraction, since 27 × 7 = 189,
18/27 = 18 × 7/27 × 7 = 126/189 - Subtract the two like fractions:
9/189 - 126/189 = 9 - 126/189 = -117/189 - After reducing the fraction, the answer is -13/21
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