Subtract 45/30 from 20/48
1st number: 20/48, 2nd number: 1 15/30
20/48 - 45/30 is -13/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 48 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 48 × 5 = 240,
20/48 = 20 × 5/48 × 5 = 100/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
45/30 = 45 × 8/30 × 8 = 360/240 - Subtract the two like fractions:
100/240 - 360/240 = 100 - 360/240 = -260/240 - After reducing the fraction, the answer is -13/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/48-45/30 20/48-90/30 20/96-45/30 20/48-45/60 60/48-45/30 20/48-45/90