Subtract 30/10 from 1/28
1st number: 1/28, 2nd number: 3 0/10
1/28 - 30/10 is -83/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 10 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
1/28 = 1 × 5/28 × 5 = 5/140 - Likewise, for the 2nd fraction, since 10 × 14 = 140,
30/10 = 30 × 14/10 × 14 = 420/140 - Subtract the two like fractions:
5/140 - 420/140 = 5 - 420/140 = -415/140 - After reducing the fraction, the answer is -83/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28-30/10 1/28-60/10 1/56-30/10 1/28-30/20 3/28-30/10 1/28-90/10 1/84-30/10 5/28-30/10 1/28-30/50 7/28-30/10 1/28-30/70