Subtract 6/90 from 2/84
2/84 - 6/90 is -3/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
2/84 = 2 × 15/84 × 15 = 30/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
6/90 = 6 × 14/90 × 14 = 84/1260 - Subtract the two like fractions:
30/1260 - 84/1260 = 30 - 84/1260 = -54/1260 - After reducing the fraction, the answer is -3/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/84-6/90 2/84-12/90 6/84-6/90 2/84-18/90 10/84-6/90 2/84-30/90 14/84-6/90 2/84-42/90