Subtract 10/60 from 30/40
30/40 - 10/60 is 7/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 60 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
30/40 = 30 × 3/40 × 3 = 90/120 - Likewise, for the 2nd fraction, since 60 × 2 = 120,
10/60 = 10 × 2/60 × 2 = 20/120 - Subtract the two like fractions:
90/120 - 20/120 = 90 - 20/120 = 70/120 - After reducing the fraction, the answer is 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40-10/60 30/40-20/60 30/80-10/60 90/40-10/60 30/40-30/60 30/40-50/60 30/40-70/60