Subtract 50/63 from 20/54
20/54 - 50/63 is -80/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 63 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
20/54 = 20 × 7/54 × 7 = 140/378 - Likewise, for the 2nd fraction, since 63 × 6 = 378,
50/63 = 50 × 6/63 × 6 = 300/378 - Subtract the two like fractions:
140/378 - 300/378 = 140 - 300/378 = -160/378 - After reducing the fraction, the answer is -80/189
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