Subtract 15/75 from 70/40
1st number: 1 30/40, 2nd number: 15/75
70/40 - 15/75 is 31/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 75 is 600
Next, find the equivalent fraction of both fractional numbers with denominator 600 - For the 1st fraction, since 40 × 15 = 600,
70/40 = 70 × 15/40 × 15 = 1050/600 - Likewise, for the 2nd fraction, since 75 × 8 = 600,
15/75 = 15 × 8/75 × 8 = 120/600 - Subtract the two like fractions:
1050/600 - 120/600 = 1050 - 120/600 = 930/600 - After reducing the fraction, the answer is 31/20
- In mixed form: 111/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40-30/75 70/80-15/75 70/40-45/75