Subtract 15/70 from 10/18
10/18 - 15/70 is 43/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
10/18 = 10 × 35/18 × 35 = 350/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Subtract the two like fractions:
350/630 - 135/630 = 350 - 135/630 = 215/630 - After reducing the fraction, the answer is 43/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18-15/70 10/18-30/70 10/36-15/70 30/18-15/70 10/18-45/70 10/54-15/70 50/18-15/70 10/18-75/70 10/90-15/70 70/18-15/70