Subtract 40/30 from 28/14
1st number: 2 0/14, 2nd number: 1 10/30
28/14 - 40/30 is 2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 14 × 15 = 210,
28/14 = 28 × 15/14 × 15 = 420/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
40/30 = 40 × 7/30 × 7 = 280/210 - Subtract the two like fractions:
420/210 - 280/210 = 420 - 280/210 = 140/210 - After reducing the fraction, the answer is 2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-40/30 28/14-80/30 28/14-40/60 84/14-40/30 28/42-40/30 28/14-40/90 28/70-40/30 28/98-40/30