Subtract 70/63 from 15/16
1st number: 15/16, 2nd number: 1 7/63
15/16 - 70/63 is -25/144.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 63 is 1008
Next, find the equivalent fraction of both fractional numbers with denominator 1008 - For the 1st fraction, since 16 × 63 = 1008,
15/16 = 15 × 63/16 × 63 = 945/1008 - Likewise, for the 2nd fraction, since 63 × 16 = 1008,
70/63 = 70 × 16/63 × 16 = 1120/1008 - Subtract the two like fractions:
945/1008 - 1120/1008 = 945 - 1120/1008 = -175/1008 - After reducing the fraction, the answer is -25/144
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/16-70/63 15/32-70/63 45/16-70/63 15/48-70/63 75/16-70/63 15/80-70/63