Subtract 30/35 from 6/40
6/40 - 30/35 is -99/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
6/40 = 6 × 7/40 × 7 = 42/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
30/35 = 30 × 8/35 × 8 = 240/280 - Subtract the two like fractions:
42/280 - 240/280 = 42 - 240/280 = -198/280 - After reducing the fraction, the answer is -99/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40-30/35 6/40-60/35 6/80-30/35 6/40-30/70 18/40-30/35 6/40-90/35 30/40-30/35 42/40-30/35