Subtract 9/70 from 90/5
1st number: 18 0/5, 2nd number: 9/70
90/5 - 9/70 is 1251/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 5 × 14 = 70,
90/5 = 90 × 14/5 × 14 = 1260/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
9/70 = 9 × 1/70 × 1 = 9/70 - Subtract the two like fractions:
1260/70 - 9/70 = 1260 - 9/70 = 1251/70 - In mixed form: 1761/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5-18/70 90/10-9/70 90/5-27/70 90/15-9/70 90/5-45/70 90/25-9/70 90/5-63/70 90/35-9/70