Subtract 15/81 from 3/63
3/63 - 15/81 is -26/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 63 × 9 = 567,
3/63 = 3 × 9/63 × 9 = 27/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
15/81 = 15 × 7/81 × 7 = 105/567 - Subtract the two like fractions:
27/567 - 105/567 = 27 - 105/567 = -78/567 - After reducing the fraction, the answer is -26/189
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