Subtract 70/12 from 90/5
1st number: 18 0/5, 2nd number: 5 10/12
90/5 - 70/12 is 73/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 5 × 12 = 60,
90/5 = 90 × 12/5 × 12 = 1080/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
70/12 = 70 × 5/12 × 5 = 350/60 - Subtract the two like fractions:
1080/60 - 350/60 = 1080 - 350/60 = 730/60 - After reducing the fraction, the answer is 73/6
- In mixed form: 121/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-70/12 90/5-70/24 90/15-70/12 90/5-70/36 90/25-70/12 90/5-70/60 90/35-70/12 90/5-70/84