Subtract 28/50 from 75/70
1st number: 1 5/70, 2nd number: 28/50
75/70 - 28/50 is 179/350.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 50 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 70 × 5 = 350,
75/70 = 75 × 5/70 × 5 = 375/350 - Likewise, for the 2nd fraction, since 50 × 7 = 350,
28/50 = 28 × 7/50 × 7 = 196/350 - Subtract the two like fractions:
375/350 - 196/350 = 375 - 196/350 = 179/350
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/70-56/50 75/70-84/50