Subtract 81/50 from 12/42
1st number: 12/42, 2nd number: 1 31/50
12/42 - 81/50 is -467/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
12/42 = 12 × 25/42 × 25 = 300/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
81/50 = 81 × 21/50 × 21 = 1701/1050 - Subtract the two like fractions:
300/1050 - 1701/1050 = 300 - 1701/1050 = -1401/1050 - After reducing the fraction, the answer is -467/350
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