Subtract 63/90 from 10/84
10/84 - 63/90 is -61/105.
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,
10/84 = 10 × 15/84 × 15 = 150/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
63/90 = 63 × 14/90 × 14 = 882/1260 - Subtract the two like fractions:
150/1260 - 882/1260 = 150 - 882/1260 = -732/1260 - After reducing the fraction, the answer is -61/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84-63/90 30/84-63/90 50/84-63/90 70/84-63/90