Subtract 45/40 from 6/30
1st number: 6/30, 2nd number: 1 5/40
6/30 - 45/40 is -37/40.
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,
45/40 = 45 × 3/40 × 3 = 135/120 - Subtract the two like fractions:
24/120 - 135/120 = 24 - 135/120 = -111/120 - After reducing the fraction, the answer is -37/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/30-45/40 6/30-90/40 6/60-45/40 6/30-45/80 18/30-45/40 6/90-45/40 42/30-45/40