Subtract 90/45 from 10/49
1st number: 10/49, 2nd number: 2 0/45
10/49 - 90/45 is -88/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 45 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 49 × 45 = 2205,
10/49 = 10 × 45/49 × 45 = 450/2205 - Likewise, for the 2nd fraction, since 45 × 49 = 2205,
90/45 = 90 × 49/45 × 49 = 4410/2205 - Subtract the two like fractions:
450/2205 - 4410/2205 = 450 - 4410/2205 = -3960/2205 - After reducing the fraction, the answer is -88/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/49-90/45 10/98-90/45 30/49-90/45 50/49-90/45 70/49-90/45