Subtract 75/30 from 70/18
1st number: 3 16/18, 2nd number: 2 15/30
70/18 - 75/30 is 25/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
70/18 = 70 × 5/18 × 5 = 350/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
75/30 = 75 × 3/30 × 3 = 225/90 - Subtract the two like fractions:
350/90 - 225/90 = 350 - 225/90 = 125/90 - After reducing the fraction, the answer is 25/18
- In mixed form: 17/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/36-75/30 70/18-75/60 70/54-75/30 70/18-75/90 70/90-75/30