Subtract 36/9 from 80/90
1st number: 80/90, 2nd number: 4 0/9
80/90 - 36/9 is -28/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
80/90 = 80 × 1/90 × 1 = 80/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
36/9 = 36 × 10/9 × 10 = 360/90 - Subtract the two like fractions:
80/90 - 360/90 = 80 - 360/90 = -280/90 - After reducing the fraction, the answer is -28/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90-72/9 80/90-36/18 80/90-36/27 80/90-36/45 80/90-36/63