Subtract 32/3 from 18/42
1st number: 18/42, 2nd number: 10 2/3
18/42 - 32/3 is -215/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
18/42 = 18 × 1/42 × 1 = 18/42 - Likewise, for the 2nd fraction, since 3 × 14 = 42,
32/3 = 32 × 14/3 × 14 = 448/42 - Subtract the two like fractions:
18/42 - 448/42 = 18 - 448/42 = -430/42 - After reducing the fraction, the answer is -215/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42-32/3 18/42-64/3 18/84-32/3 18/42-32/6 54/42-32/3 18/42-96/3 18/42-32/9 90/42-32/3 18/42-32/15 18/42-32/21