Subtract 7/40 from 6/30
6/30 - 7/40 is 1/40.
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,
6/30 = 6 × 4/30 × 4 = 24/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
7/40 = 7 × 3/40 × 3 = 21/120 - Subtract the two like fractions:
24/120 - 21/120 = 24 - 21/120 = 3/120 - After reducing the fraction, the answer is 1/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30-7/40 6/30-14/40 6/60-7/40 6/30-7/80 18/30-7/40 6/30-21/40 6/90-7/40 6/30-35/40 42/30-7/40 6/30-49/40