Subtract 9/45 from 7/84
7/84 - 9/45 is -7/60.
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,
7/84 = 7 × 15/84 × 15 = 105/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
9/45 = 9 × 28/45 × 28 = 252/1260 - Subtract the two like fractions:
105/1260 - 252/1260 = 105 - 252/1260 = -147/1260 - After reducing the fraction, the answer is -7/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84-9/45 7/84-18/45 7/84-9/90 21/84-9/45 7/84-27/45 35/84-9/45 49/84-9/45 7/84-63/45