Subtract 1/70 from 15/18
15/18 - 1/70 is 86/105.
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,
15/18 = 15 × 35/18 × 35 = 525/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
1/70 = 1 × 9/70 × 9 = 9/630 - Subtract the two like fractions:
525/630 - 9/630 = 525 - 9/630 = 516/630 - After reducing the fraction, the answer is 86/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18-1/70 15/18-2/70 15/36-1/70 45/18-1/70 15/18-3/70 15/54-1/70 75/18-1/70 15/18-5/70 15/90-1/70 15/18-7/70