Subtract 18/15 from 16/42
1st number: 16/42, 2nd number: 1 3/15
16/42 - 18/15 is -86/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 15 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
16/42 = 16 × 5/42 × 5 = 80/210 - Likewise, for the 2nd fraction, since 15 × 14 = 210,
18/15 = 18 × 14/15 × 14 = 252/210 - Subtract the two like fractions:
80/210 - 252/210 = 80 - 252/210 = -172/210 - After reducing the fraction, the answer is -86/105
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