Subtract 63/27 from 90/80
1st number: 1 10/80, 2nd number: 2 9/27
90/80 - 63/27 is -29/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 27 is 2160
Next, find the equivalent fraction of both fractional numbers with denominator 2160 - For the 1st fraction, since 80 × 27 = 2160,
90/80 = 90 × 27/80 × 27 = 2430/2160 - Likewise, for the 2nd fraction, since 27 × 80 = 2160,
63/27 = 63 × 80/27 × 80 = 5040/2160 - Subtract the two like fractions:
2430/2160 - 5040/2160 = 2430 - 5040/2160 = -2610/2160 - After reducing the fraction, the answer is -29/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80-63/54 90/80-63/81