Subtract 21/30 from 16/49
16/49 - 21/30 is -183/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 49 × 30 = 1470,
16/49 = 16 × 30/49 × 30 = 480/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
21/30 = 21 × 49/30 × 49 = 1029/1470 - Subtract the two like fractions:
480/1470 - 1029/1470 = 480 - 1029/1470 = -549/1470 - After reducing the fraction, the answer is -183/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/49-21/30 16/49-42/30 16/98-21/30 16/49-21/60 48/49-21/30 16/49-63/30 16/49-21/90 80/49-21/30