Subtract 18/63 from 20/27
20/27 - 18/63 is 86/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 63 is 189
Next, find the equivalent fraction of both fractional numbers with denominator 189 - For the 1st fraction, since 27 × 7 = 189,
20/27 = 20 × 7/27 × 7 = 140/189 - Likewise, for the 2nd fraction, since 63 × 3 = 189,
18/63 = 18 × 3/63 × 3 = 54/189 - Subtract the two like fractions:
140/189 - 54/189 = 140 - 54/189 = 86/189
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