Subtract 48/45 from 8/20
1st number: 8/20, 2nd number: 1 3/45
8/20 - 48/45 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
8/20 = 8 × 9/20 × 9 = 72/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
48/45 = 48 × 4/45 × 4 = 192/180 - Subtract the two like fractions:
72/180 - 192/180 = 72 - 192/180 = -120/180 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/20-48/45 8/20-96/45 8/40-48/45 8/20-48/90 24/20-48/45 8/60-48/45 40/20-48/45 56/20-48/45