Subtract 10/36 from 90/20
1st number: 4 10/20, 2nd number: 10/36
90/20 - 10/36 is 38/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
90/20 = 90 × 9/20 × 9 = 810/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
10/36 = 10 × 5/36 × 5 = 50/180 - Subtract the two like fractions:
810/180 - 50/180 = 810 - 50/180 = 760/180 - After reducing the fraction, the answer is 38/9
- In mixed form: 42/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-20/36 90/40-10/36 90/20-10/72 90/20-30/36 90/60-10/36 90/20-50/36 90/20-70/36