Subtract 30/35 from 40/20
1st number: 2 0/20, 2nd number: 30/35
40/20 - 30/35 is 8/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
40/20 = 40 × 7/20 × 7 = 280/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
30/35 = 30 × 4/35 × 4 = 120/140 - Subtract the two like fractions:
280/140 - 120/140 = 280 - 120/140 = 160/140 - After reducing the fraction, the answer is 8/7
- In mixed form: 11/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20-30/35 40/20-60/35 40/20-30/70 40/20-90/35 40/60-30/35