Subtract 20/48 from 90/20
1st number: 4 10/20, 2nd number: 20/48
90/20 - 20/48 is 49/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
90/20 = 90 × 12/20 × 12 = 1080/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
20/48 = 20 × 5/48 × 5 = 100/240 - Subtract the two like fractions:
1080/240 - 100/240 = 1080 - 100/240 = 980/240 - After reducing the fraction, the answer is 49/12
- In mixed form: 41/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-40/48 90/40-20/48 90/20-20/96 90/20-60/48 90/60-20/48