Subtract 6/84 from 18/45
18/45 - 6/84 is 23/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
18/45 = 18 × 28/45 × 28 = 504/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
6/84 = 6 × 15/84 × 15 = 90/1260 - Subtract the two like fractions:
504/1260 - 90/1260 = 504 - 90/1260 = 414/1260 - After reducing the fraction, the answer is 23/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45-6/84 18/45-12/84 18/90-6/84 54/45-6/84 18/45-18/84 90/45-6/84 18/45-30/84 18/45-42/84