Subtract 28/50 from 30/81
30/81 - 28/50 is -128/675.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 50 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 81 × 50 = 4050,
30/81 = 30 × 50/81 × 50 = 1500/4050 - Likewise, for the 2nd fraction, since 50 × 81 = 4050,
28/50 = 28 × 81/50 × 81 = 2268/4050 - Subtract the two like fractions:
1500/4050 - 2268/4050 = 1500 - 2268/4050 = -768/4050 - After reducing the fraction, the answer is -128/675
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