Subtract 14/42 from 45/84
45/84 - 14/42 is 17/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
45/84 = 45 × 1/84 × 1 = 45/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
14/42 = 14 × 2/42 × 2 = 28/84 - Subtract the two like fractions:
45/84 - 28/84 = 45 - 28/84 = 17/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84-14/42 45/84-28/42 45/84-14/84 45/84-70/42 45/84-98/42