Subtract 42/80 from 2/9
2/9 - 42/80 is -109/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
2/9 = 2 × 80/9 × 80 = 160/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Subtract the two like fractions:
160/720 - 378/720 = 160 - 378/720 = -218/720 - After reducing the fraction, the answer is -109/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/9-42/80 2/9-84/80 2/18-42/80 6/9-42/80 2/27-42/80 10/9-42/80 2/45-42/80 14/9-42/80 2/63-42/80