Subtract 96/84 from 18/42
1st number: 18/42, 2nd number: 1 12/84
18/42 - 96/84 is -5/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
18/42 = 18 × 2/42 × 2 = 36/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
96/84 = 96 × 1/84 × 1 = 96/84 - Subtract the two like fractions:
36/84 - 96/84 = 36 - 96/84 = -60/84 - After reducing the fraction, the answer is -5/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/42-96/84 18/84-96/84 54/42-96/84 90/42-96/84