Subtract 70/30 from 80/75
1st number: 1 5/75, 2nd number: 2 10/30
80/75 - 70/30 is -19/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 75 × 2 = 150,
80/75 = 80 × 2/75 × 2 = 160/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
70/30 = 70 × 5/30 × 5 = 350/150 - Subtract the two like fractions:
160/150 - 350/150 = 160 - 350/150 = -190/150 - After reducing the fraction, the answer is -19/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/75-70/60 80/75-70/90