Subtract 42/36 from 10/80
1st number: 10/80, 2nd number: 1 6/36
10/80 - 42/36 is -25/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
10/80 = 10 × 9/80 × 9 = 90/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
42/36 = 42 × 20/36 × 20 = 840/720 - Subtract the two like fractions:
90/720 - 840/720 = 90 - 840/720 = -750/720 - After reducing the fraction, the answer is -25/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/80-42/36 10/80-84/36 10/80-42/72 30/80-42/36 50/80-42/36 70/80-42/36