Subtract 90/16 from 49/18
1st number: 2 13/18, 2nd number: 5 10/16
49/18 - 90/16 is -209/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 18 × 8 = 144,
49/18 = 49 × 8/18 × 8 = 392/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
90/16 = 90 × 9/16 × 9 = 810/144 - Subtract the two like fractions:
392/144 - 810/144 = 392 - 810/144 = -418/144 - After reducing the fraction, the answer is -209/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/18-90/16 49/36-90/16 49/18-90/32 49/54-90/16 49/18-90/48 49/90-90/16 49/18-90/80