Subtract 35/9 from 30/80
1st number: 30/80, 2nd number: 3 8/9
30/80 - 35/9 is -253/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 9 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
30/80 = 30 × 9/80 × 9 = 270/720 - Likewise, for the 2nd fraction, since 9 × 80 = 720,
35/9 = 35 × 80/9 × 80 = 2800/720 - Subtract the two like fractions:
270/720 - 2800/720 = 270 - 2800/720 = -2530/720 - After reducing the fraction, the answer is -253/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/80-35/9 30/80-70/9 30/80-35/18 90/80-35/9 30/80-35/27 30/80-35/45 30/80-35/63