Subtract 45/49 from 9/90
9/90 - 45/49 is -401/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 49 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
9/90 = 9 × 49/90 × 49 = 441/4410 - Likewise, for the 2nd fraction, since 49 × 90 = 4410,
45/49 = 45 × 90/49 × 90 = 4050/4410 - Subtract the two like fractions:
441/4410 - 4050/4410 = 441 - 4050/4410 = -3609/4410 - After reducing the fraction, the answer is -401/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/90-45/49 9/90-90/49 9/90-45/98 27/90-45/49 45/90-45/49 63/90-45/49