Subtract 5/90 from 42/24
1st number: 1 18/24, 2nd number: 5/90
42/24 - 5/90 is 61/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
42/24 = 42 × 15/24 × 15 = 630/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
5/90 = 5 × 4/90 × 4 = 20/360 - Subtract the two like fractions:
630/360 - 20/360 = 630 - 20/360 = 610/360 - After reducing the fraction, the answer is 61/36
- In mixed form: 125/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/24-5/90 42/24-10/90 42/48-5/90 42/24-15/90 42/72-5/90 42/24-25/90 42/24-35/90