Subtract 90/18 from 42/28
1st number: 1 14/28, 2nd number: 5 0/18
42/28 - 90/18 is -7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
42/28 = 42 × 9/28 × 9 = 378/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
90/18 = 90 × 14/18 × 14 = 1260/252 - Subtract the two like fractions:
378/252 - 1260/252 = 378 - 1260/252 = -882/252 - After reducing the fraction, the answer is -7/2
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