Subtract 48/20 from 3/45
1st number: 3/45, 2nd number: 2 8/20
3/45 - 48/20 is -7/3.
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,
3/45 = 3 × 4/45 × 4 = 12/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
48/20 = 48 × 9/20 × 9 = 432/180 - Subtract the two like fractions:
12/180 - 432/180 = 12 - 432/180 = -420/180 - After reducing the fraction, the answer is -7/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45-48/20 3/45-96/20 3/90-48/20 3/45-48/40 9/45-48/20 3/45-48/60 15/45-48/20 21/45-48/20