Subtract 10/42 from 30/28
1st number: 1 2/28, 2nd number: 10/42
30/28 - 10/42 is 5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
30/28 = 30 × 3/28 × 3 = 90/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
10/42 = 10 × 2/42 × 2 = 20/84 - Subtract the two like fractions:
90/84 - 20/84 = 90 - 20/84 = 70/84 - After reducing the fraction, the answer is 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/28-10/42 30/28-20/42 30/56-10/42 30/28-10/84 90/28-10/42 30/28-30/42 30/84-10/42 30/28-50/42 30/28-70/42