Subtract 20/9 from 40/35
1st number: 1 5/35, 2nd number: 2 2/9
40/35 - 20/9 is -68/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 9 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 35 × 9 = 315,
40/35 = 40 × 9/35 × 9 = 360/315 - Likewise, for the 2nd fraction, since 9 × 35 = 315,
20/9 = 20 × 35/9 × 35 = 700/315 - Subtract the two like fractions:
360/315 - 700/315 = 360 - 700/315 = -340/315 - After reducing the fraction, the answer is -68/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/35-20/9 40/35-40/9 40/70-20/9 40/35-20/18 40/35-60/9 40/35-20/27 40/35-20/45 40/35-20/63