Subtract 27/30 from 12/98
12/98 - 27/30 is -381/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 30 is 1470
Next, find the equivalent fraction of both fractional numbers with denominator 1470 - For the 1st fraction, since 98 × 15 = 1470,
12/98 = 12 × 15/98 × 15 = 180/1470 - Likewise, for the 2nd fraction, since 30 × 49 = 1470,
27/30 = 27 × 49/30 × 49 = 1323/1470 - Subtract the two like fractions:
180/1470 - 1323/1470 = 180 - 1323/1470 = -1143/1470 - After reducing the fraction, the answer is -381/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/98-27/30 12/98-54/30 12/98-27/60 36/98-27/30 12/98-81/30 12/98-27/90 60/98-27/30 84/98-27/30