Subtract 75/80 from 70/36
1st number: 1 34/36, 2nd number: 75/80
70/36 - 75/80 is 145/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
70/36 = 70 × 20/36 × 20 = 1400/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
75/80 = 75 × 9/80 × 9 = 675/720 - Subtract the two like fractions:
1400/720 - 675/720 = 1400 - 675/720 = 725/720 - After reducing the fraction, the answer is 145/144
- In mixed form: 11/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/72-75/80