Subtract 28/40 from 4/98
4/98 - 28/40 is -323/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 98 × 20 = 1960,
4/98 = 4 × 20/98 × 20 = 80/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
28/40 = 28 × 49/40 × 49 = 1372/1960 - Subtract the two like fractions:
80/1960 - 1372/1960 = 80 - 1372/1960 = -1292/1960 - After reducing the fraction, the answer is -323/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/98-28/40 4/98-56/40 4/98-28/80 12/98-28/40 4/98-84/40 20/98-28/40 28/98-28/40