Subtract 20/18 from 24/70
1st number: 24/70, 2nd number: 1 2/18
24/70 - 20/18 is -242/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
24/70 = 24 × 9/70 × 9 = 216/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
20/18 = 20 × 35/18 × 35 = 700/630 - Subtract the two like fractions:
216/630 - 700/630 = 216 - 700/630 = -484/630 - After reducing the fraction, the answer is -242/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/70-20/18 24/70-40/18 24/70-20/36 72/70-20/18 24/70-60/18 24/70-20/54 24/70-20/90