Subtract 9/40 from 75/30
1st number: 2 15/30, 2nd number: 9/40
75/30 - 9/40 is 91/40.
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,
75/30 = 75 × 4/30 × 4 = 300/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
9/40 = 9 × 3/40 × 3 = 27/120 - Subtract the two like fractions:
300/120 - 27/120 = 300 - 27/120 = 273/120 - After reducing the fraction, the answer is 91/40
- In mixed form: 211/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/30-18/40 75/60-9/40 75/30-9/80 75/30-27/40 75/90-9/40 75/30-45/40 75/30-63/40