Subtract 90/35 from 81/24
1st number: 3 9/24, 2nd number: 2 20/35
81/24 - 90/35 is 45/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 35 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
81/24 = 81 × 35/24 × 35 = 2835/840 - Likewise, for the 2nd fraction, since 35 × 24 = 840,
90/35 = 90 × 24/35 × 24 = 2160/840 - Subtract the two like fractions:
2835/840 - 2160/840 = 2835 - 2160/840 = 675/840 - After reducing the fraction, the answer is 45/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/48-90/35 81/24-90/70 81/72-90/35