Subtract 30/63 from 12/81
12/81 - 30/63 is -62/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 63 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
12/81 = 12 × 7/81 × 7 = 84/567 - Likewise, for the 2nd fraction, since 63 × 9 = 567,
30/63 = 30 × 9/63 × 9 = 270/567 - Subtract the two like fractions:
84/567 - 270/567 = 84 - 270/567 = -186/567 - After reducing the fraction, the answer is -62/189
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