Subtract 90/18 from 42/16
1st number: 2 10/16, 2nd number: 5 0/18
42/16 - 90/18 is -19/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
42/16 = 42 × 9/16 × 9 = 378/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
90/18 = 90 × 8/18 × 8 = 720/144 - Subtract the two like fractions:
378/144 - 720/144 = 378 - 720/144 = -342/144 - After reducing the fraction, the answer is -19/8
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