Subtract 9/50 from 42/81
42/81 - 9/50 is 457/1350.
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,
42/81 = 42 × 50/81 × 50 = 2100/4050 - Likewise, for the 2nd fraction, since 50 × 81 = 4050,
9/50 = 9 × 81/50 × 81 = 729/4050 - Subtract the two like fractions:
2100/4050 - 729/4050 = 2100 - 729/4050 = 1371/4050 - After reducing the fraction, the answer is 457/1350
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