Subtract 12/90 from 2/49
2/49 - 12/90 is -68/735.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 90 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 49 × 90 = 4410,
2/49 = 2 × 90/49 × 90 = 180/4410 - Likewise, for the 2nd fraction, since 90 × 49 = 4410,
12/90 = 12 × 49/90 × 49 = 588/4410 - Subtract the two like fractions:
180/4410 - 588/4410 = 180 - 588/4410 = -408/4410 - After reducing the fraction, the answer is -68/735
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/49-12/90 2/49-24/90 2/98-12/90 6/49-12/90 2/49-36/90 10/49-12/90 2/49-60/90 14/49-12/90 2/49-84/90