Subtract 42/28 from 20/18
1st number: 1 2/18, 2nd number: 1 14/28
20/18 - 42/28 is -7/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
20/18 = 20 × 14/18 × 14 = 280/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
42/28 = 42 × 9/28 × 9 = 378/252 - Subtract the two like fractions:
280/252 - 378/252 = 280 - 378/252 = -98/252 - After reducing the fraction, the answer is -7/18
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