Subtract 20/18 from 60/70
1st number: 60/70, 2nd number: 1 2/18
60/70 - 20/18 is -16/63.
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,
60/70 = 60 × 9/70 × 9 = 540/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
20/18 = 20 × 35/18 × 35 = 700/630 - Subtract the two like fractions:
540/630 - 700/630 = 540 - 700/630 = -160/630 - After reducing the fraction, the answer is -16/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70-40/18 60/70-20/36 60/70-60/18 60/70-20/54 60/70-20/90