Subtract 15/80 from 25/30
25/30 - 15/80 is 31/48.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
25/30 = 25 × 8/30 × 8 = 200/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
15/80 = 15 × 3/80 × 3 = 45/240 - Subtract the two like fractions:
200/240 - 45/240 = 200 - 45/240 = 155/240 - After reducing the fraction, the answer is 31/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30-15/80 25/30-30/80 25/60-15/80 75/30-15/80 25/30-45/80 25/90-15/80 25/30-75/80