Subtract 4/24 from 90/70
1st number: 1 20/70, 2nd number: 4/24
90/70 - 4/24 is 47/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 24 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 70 × 12 = 840,
90/70 = 90 × 12/70 × 12 = 1080/840 - Likewise, for the 2nd fraction, since 24 × 35 = 840,
4/24 = 4 × 35/24 × 35 = 140/840 - Subtract the two like fractions:
1080/840 - 140/840 = 1080 - 140/840 = 940/840 - After reducing the fraction, the answer is 47/42
- In mixed form: 15/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70-8/24 90/70-4/48 90/70-12/24 90/70-4/72 90/70-20/24 90/70-28/24