Subtract 84/45 from 20/50
1st number: 20/50, 2nd number: 1 39/45
20/50 - 84/45 is -22/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 45 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 50 × 9 = 450,
20/50 = 20 × 9/50 × 9 = 180/450 - Likewise, for the 2nd fraction, since 45 × 10 = 450,
84/45 = 84 × 10/45 × 10 = 840/450 - Subtract the two like fractions:
180/450 - 840/450 = 180 - 840/450 = -660/450 - After reducing the fraction, the answer is -22/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/50-84/45 20/50-84/90 60/50-84/45