Subtract 1/90 from 84/20
1st number: 4 4/20, 2nd number: 1/90
84/20 - 1/90 is 377/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
84/20 = 84 × 9/20 × 9 = 756/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
1/90 = 1 × 2/90 × 2 = 2/180 - Subtract the two like fractions:
756/180 - 2/180 = 756 - 2/180 = 754/180 - After reducing the fraction, the answer is 377/90
- In mixed form: 417/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-2/90 84/40-1/90 84/20-3/90 84/60-1/90 84/20-5/90 84/20-7/90