Subtract 20/49 from 70/64
1st number: 1 6/64, 2nd number: 20/49
70/64 - 20/49 is 1075/1568.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 49 is 3136
Next, find the equivalent fraction of both fractional numbers with denominator 3136 - For the 1st fraction, since 64 × 49 = 3136,
70/64 = 70 × 49/64 × 49 = 3430/3136 - Likewise, for the 2nd fraction, since 49 × 64 = 3136,
20/49 = 20 × 64/49 × 64 = 1280/3136 - Subtract the two like fractions:
3430/3136 - 1280/3136 = 3430 - 1280/3136 = 2150/3136 - After reducing the fraction, the answer is 1075/1568
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/64-40/49 70/64-20/98 70/64-60/49