Subtract 20/16 from 45/49
1st number: 45/49, 2nd number: 1 4/16
45/49 - 20/16 is -65/196.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 16 is 784
Next, find the equivalent fraction of both fractional numbers with denominator 784 - For the 1st fraction, since 49 × 16 = 784,
45/49 = 45 × 16/49 × 16 = 720/784 - Likewise, for the 2nd fraction, since 16 × 49 = 784,
20/16 = 20 × 49/16 × 49 = 980/784 - Subtract the two like fractions:
720/784 - 980/784 = 720 - 980/784 = -260/784 - After reducing the fraction, the answer is -65/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/49-20/16 45/49-40/16 45/98-20/16 45/49-20/32 45/49-60/16 45/49-20/48 45/49-20/80