Subtract 84/20 from 60/45
1st number: 1 15/45, 2nd number: 4 4/20
60/45 - 84/20 is -43/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
60/45 = 60 × 4/45 × 4 = 240/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
84/20 = 84 × 9/20 × 9 = 756/180 - Subtract the two like fractions:
240/180 - 756/180 = 240 - 756/180 = -516/180 - After reducing the fraction, the answer is -43/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90-84/20 60/45-84/40 60/45-84/60