Subtract 15/18 from 70/45
1st number: 1 25/45, 2nd number: 15/18
70/45 - 15/18 is 13/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
15/18 = 15 × 5/18 × 5 = 75/90 - Subtract the two like fractions:
140/90 - 75/90 = 140 - 75/90 = 65/90 - After reducing the fraction, the answer is 13/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/45-30/18 70/90-15/18 70/45-15/36 70/45-45/18 70/45-15/54 70/45-75/18 70/45-15/90