Subtract 48/20 from 1/90
1st number: 1/90, 2nd number: 2 8/20
1/90 - 48/20 is -43/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 20 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
1/90 = 1 × 2/90 × 2 = 2/180 - Likewise, for the 2nd fraction, since 20 × 9 = 180,
48/20 = 48 × 9/20 × 9 = 432/180 - Subtract the two like fractions:
2/180 - 432/180 = 2 - 432/180 = -430/180 - After reducing the fraction, the answer is -43/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/90-48/20 1/90-96/20 1/90-48/40 3/90-48/20 1/90-48/60 5/90-48/20 7/90-48/20