Subtract 10/28 from 40/30
1st number: 1 10/30, 2nd number: 10/28
40/30 - 10/28 is 41/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
40/30 = 40 × 14/30 × 14 = 560/420 - Likewise, for the 2nd fraction, since 28 × 15 = 420,
10/28 = 10 × 15/28 × 15 = 150/420 - Subtract the two like fractions:
560/420 - 150/420 = 560 - 150/420 = 410/420 - After reducing the fraction, the answer is 41/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-10/28 40/30-20/28 40/60-10/28 40/30-10/56 40/30-30/28 40/90-10/28 40/30-10/84 40/30-50/28 40/30-70/28