Subtract 28/10 from 63/84
1st number: 63/84, 2nd number: 2 8/10
63/84 - 28/10 is -41/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 10 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
63/84 = 63 × 5/84 × 5 = 315/420 - Likewise, for the 2nd fraction, since 10 × 42 = 420,
28/10 = 28 × 42/10 × 42 = 1176/420 - Subtract the two like fractions:
315/420 - 1176/420 = 315 - 1176/420 = -861/420 - After reducing the fraction, the answer is -41/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/84-56/10 63/84-28/20 63/84-84/10 63/84-28/30 63/84-28/50 63/84-28/70