Subtract 30/60 from 18/15
1st number: 1 3/15, 2nd number: 30/60
18/15 - 30/60 is 7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 60 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
18/15 = 18 × 4/15 × 4 = 72/60 - Likewise, for the 2nd fraction, since 60 × 1 = 60,
30/60 = 30 × 1/60 × 1 = 30/60 - Subtract the two like fractions:
72/60 - 30/60 = 72 - 30/60 = 42/60 - After reducing the fraction, the answer is 7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/15-30/60 18/30-30/60 54/15-30/60 18/15-90/60 18/45-30/60 90/15-30/60 18/75-30/60