Subtract 5/7 from 45/84
45/84 - 5/7 is -5/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 7 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 7 × 12 = 84,
5/7 = 5 × 12/7 × 12 = 60/84 - Subtract the two like fractions:
45/84 - 60/84 = 45 - 60/84 = -15/84 - After reducing the fraction, the answer is -5/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/84-5/7 45/84-10/7 45/84-5/14 45/84-15/7 45/84-5/21 45/84-25/7 45/84-5/35 45/84-35/7 45/84-5/49