Subtract 40/14 from 30/15
1st number: 2 0/15, 2nd number: 2 12/14
30/15 - 40/14 is -6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 14 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
30/15 = 30 × 14/15 × 14 = 420/210 - Likewise, for the 2nd fraction, since 14 × 15 = 210,
40/14 = 40 × 15/14 × 15 = 600/210 - Subtract the two like fractions:
420/210 - 600/210 = 420 - 600/210 = -180/210 - After reducing the fraction, the answer is -6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15-40/14 30/15-80/14 30/15-40/28 90/15-40/14 30/45-40/14 30/15-40/42 30/75-40/14 30/15-40/70 30/15-40/98