Subtract 9/16 from 20/49
20/49 - 9/16 is -121/784.
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,
20/49 = 20 × 16/49 × 16 = 320/784 - Likewise, for the 2nd fraction, since 16 × 49 = 784,
9/16 = 9 × 49/16 × 49 = 441/784 - Subtract the two like fractions:
320/784 - 441/784 = 320 - 441/784 = -121/784
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/49-9/16 20/49-18/16 20/98-9/16 20/49-9/32 60/49-9/16 20/49-27/16 20/49-9/48 20/49-45/16 20/49-9/80 20/49-63/16