Subtract 63/84 from 16/70
16/70 - 63/84 is -73/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
16/70 = 16 × 6/70 × 6 = 96/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
63/84 = 63 × 5/84 × 5 = 315/420 - Subtract the two like fractions:
96/420 - 315/420 = 96 - 315/420 = -219/420 - After reducing the fraction, the answer is -73/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/70-63/84 48/70-63/84 80/70-63/84