Subtract 42/18 from 42/5
1st number: 8 2/5, 2nd number: 2 6/18
42/5 - 42/18 is 91/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
42/5 = 42 × 18/5 × 18 = 756/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
42/18 = 42 × 5/18 × 5 = 210/90 - Subtract the two like fractions:
756/90 - 210/90 = 756 - 210/90 = 546/90 - After reducing the fraction, the answer is 91/15
- In mixed form: 61/15
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