Subtract 70/50 from 1/28
1st number: 1/28, 2nd number: 1 20/50
1/28 - 70/50 is -191/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 50 is 700
Next, find the equivalent fraction of both fractional numbers with denominator 700 - For the 1st fraction, since 28 × 25 = 700,
1/28 = 1 × 25/28 × 25 = 25/700 - Likewise, for the 2nd fraction, since 50 × 14 = 700,
70/50 = 70 × 14/50 × 14 = 980/700 - Subtract the two like fractions:
25/700 - 980/700 = 25 - 980/700 = -955/700 - After reducing the fraction, the answer is -191/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28-70/50 1/56-70/50 3/28-70/50 1/84-70/50 5/28-70/50 7/28-70/50