Subtract 30/7 from 6/40
1st number: 6/40, 2nd number: 4 2/7
6/40 - 30/7 is -579/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 7 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 7 × 40 = 280,
30/7 = 30 × 40/7 × 40 = 1200/280 - Subtract the two like fractions:
42/280 - 1200/280 = 42 - 1200/280 = -1158/280 - After reducing the fraction, the answer is -579/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/40-30/7 6/40-60/7 6/80-30/7 6/40-30/14 18/40-30/7 6/40-90/7 6/40-30/21 30/40-30/7 6/40-30/35 42/40-30/7 6/40-30/49