Subtract 30/8 from 35/20
1st number: 1 15/20, 2nd number: 3 6/8
35/20 - 30/8 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
35/20 = 35 × 2/20 × 2 = 70/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
30/8 = 30 × 5/8 × 5 = 150/40 - Subtract the two like fractions:
70/40 - 150/40 = 70 - 150/40 = -80/40 - After reducing the fraction, the answer is -2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-30/8 35/20-60/8 35/40-30/8 35/20-30/16 35/20-90/8 35/60-30/8 35/20-30/24 35/20-30/40 35/20-30/56