Subtract 1/84 from 90/20
1st number: 4 10/20, 2nd number: 1/84
90/20 - 1/84 is 377/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 20 × 21 = 420,
90/20 = 90 × 21/20 × 21 = 1890/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
1/84 = 1 × 5/84 × 5 = 5/420 - Subtract the two like fractions:
1890/420 - 5/420 = 1890 - 5/420 = 1885/420 - After reducing the fraction, the answer is 377/84
- In mixed form: 441/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-2/84 90/40-1/84 90/20-3/84 90/60-1/84 90/20-5/84 90/20-7/84