Answers

Subtract 90/80 from 56/90

1^st number: 56/90, 2^nd number: 1 10/80

56/90 - 90/80 is -181/360.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 80 is 720
   
   Next, find the equivalent fraction of both fractional numbers with denominator 720
2. For the 1st fraction, since 90 × 8 = 720,
   56/90 = 56 × 8/90 × 8 = 448/720
3. Likewise, for the 2nd fraction, since 80 × 9 = 720,
   90/80 = 90 × 9/80 × 9 = 810/720
4. Subtract the two like fractions:
   448/720 - 810/720 = 448 - 810/720 = -362/720
5. After reducing the fraction, the answer is -181/360

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

Subtract Fractions Calculator