Subtract 8/12 from 90/35
1st number: 2 20/35, 2nd number: 8/12
90/35 - 8/12 is 40/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 35 × 12 = 420,
90/35 = 90 × 12/35 × 12 = 1080/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
8/12 = 8 × 35/12 × 35 = 280/420 - Subtract the two like fractions:
1080/420 - 280/420 = 1080 - 280/420 = 800/420 - After reducing the fraction, the answer is 40/21
- In mixed form: 119/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35-16/12 90/70-8/12 90/35-8/24 90/35-24/12 90/35-8/36 90/35-40/12 90/35-8/60 90/35-56/12 90/35-8/84