Subtract 20/70 from 45/24
1st number: 1 21/24, 2nd number: 20/70
45/24 - 20/70 is 89/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 70 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 24 × 35 = 840,
45/24 = 45 × 35/24 × 35 = 1575/840 - Likewise, for the 2nd fraction, since 70 × 12 = 840,
20/70 = 20 × 12/70 × 12 = 240/840 - Subtract the two like fractions:
1575/840 - 240/840 = 1575 - 240/840 = 1335/840 - After reducing the fraction, the answer is 89/56
- In mixed form: 133/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24-20/70 45/24-40/70 45/48-20/70 45/24-60/70 45/72-20/70