Subtract 4/12 from 90/30
1st number: 3 0/30, 2nd number: 4/12
90/30 - 4/12 is 8/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
90/30 = 90 × 2/30 × 2 = 180/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
4/12 = 4 × 5/12 × 5 = 20/60 - Subtract the two like fractions:
180/60 - 20/60 = 180 - 20/60 = 160/60 - After reducing the fraction, the answer is 8/3
- In mixed form: 22/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-8/12 90/60-4/12 90/30-4/24 90/30-4/36 90/30-20/12 90/30-4/60 90/30-28/12 90/30-4/84