Subtract 9/45 from 7/2
1st number: 3 1/2, 2nd number: 9/45
7/2 - 9/45 is 33/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
7/2 = 7 × 45/2 × 45 = 315/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
9/45 = 9 × 2/45 × 2 = 18/90 - Subtract the two like fractions:
315/90 - 18/90 = 315 - 18/90 = 297/90 - After reducing the fraction, the answer is 33/10
- In mixed form: 33/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/2-9/45 7/2-18/45 7/4-9/45 7/2-9/90 21/2-9/45 7/2-27/45 7/6-9/45 35/2-9/45 7/10-9/45 49/2-9/45 7/2-63/45 7/14-9/45