Subtract 2/84 from 90/36
1st number: 2 18/36, 2nd number: 2/84
90/36 - 2/84 is 52/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 36 × 7 = 252,
90/36 = 90 × 7/36 × 7 = 630/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
2/84 = 2 × 3/84 × 3 = 6/252 - Subtract the two like fractions:
630/252 - 6/252 = 630 - 6/252 = 624/252 - After reducing the fraction, the answer is 52/21
- In mixed form: 210/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/36-4/84 90/72-2/84 90/36-6/84 90/36-10/84 90/36-14/84