Subtract 6/40 from 7/30
7/30 - 6/40 is 1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
7/30 = 7 × 4/30 × 4 = 28/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
6/40 = 6 × 3/40 × 3 = 18/120 - Subtract the two like fractions:
28/120 - 18/120 = 28 - 18/120 = 10/120 - After reducing the fraction, the answer is 1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/30-6/40 7/30-12/40 7/60-6/40 7/30-6/80 21/30-6/40 7/30-18/40 7/90-6/40 35/30-6/40 7/30-30/40 49/30-6/40 7/30-42/40