Subtract 49/90 from 18/2
1st number: 9 0/2, 2nd number: 49/90
18/2 - 49/90 is 761/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
18/2 = 18 × 45/2 × 45 = 810/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
49/90 = 49 × 1/90 × 1 = 49/90 - Subtract the two like fractions:
810/90 - 49/90 = 810 - 49/90 = 761/90 - In mixed form: 841/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/2-49/90 18/2-98/90 18/4-49/90 54/2-49/90 18/6-49/90 90/2-49/90 18/10-49/90 18/14-49/90