Subtract 28/32 from 18/49
18/49 - 28/32 is -199/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 32 is 1568
Next, find the equivalent fraction of both fractional numbers with denominator 1568 - For the 1st fraction, since 49 × 32 = 1568,
18/49 = 18 × 32/49 × 32 = 576/1568 - Likewise, for the 2nd fraction, since 32 × 49 = 1568,
28/32 = 28 × 49/32 × 49 = 1372/1568 - Subtract the two like fractions:
576/1568 - 1372/1568 = 576 - 1372/1568 = -796/1568 - After reducing the fraction, the answer is -199/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/49-28/32 18/49-56/32 18/98-28/32 18/49-28/64 54/49-28/32 18/49-84/32 18/49-28/96 90/49-28/32