Subtract 7/45 from 3/84
3/84 - 7/45 is -151/1260.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
3/84 = 3 × 15/84 × 15 = 45/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
7/45 = 7 × 28/45 × 28 = 196/1260 - Subtract the two like fractions:
45/1260 - 196/1260 = 45 - 196/1260 = -151/1260
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/84-7/45 3/84-14/45 3/84-7/90 9/84-7/45 3/84-21/45 15/84-7/45 3/84-35/45 21/84-7/45 3/84-49/45