Subtract 90/24 from 84/15
1st number: 5 9/15, 2nd number: 3 18/24
84/15 - 90/24 is 37/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
84/15 = 84 × 8/15 × 8 = 672/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120 - Subtract the two like fractions:
672/120 - 450/120 = 672 - 450/120 = 222/120 - After reducing the fraction, the answer is 37/20
- In mixed form: 117/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30-90/24 84/15-90/48 84/45-90/24 84/15-90/72 84/75-90/24