Subtract 90/63 from 30/27
1st number: 1 3/27, 2nd number: 1 27/63
30/27 - 90/63 is -20/63.
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,
30/27 = 30 × 7/27 × 7 = 210/189 - Likewise, for the 2nd fraction, since 63 × 3 = 189,
90/63 = 90 × 3/63 × 3 = 270/189 - Subtract the two like fractions:
210/189 - 270/189 = 210 - 270/189 = -60/189 - After reducing the fraction, the answer is -20/63
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