Subtract 7/18 from 90/25
1st number: 3 15/25, 2nd number: 7/18
90/25 - 7/18 is 289/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
90/25 = 90 × 18/25 × 18 = 1620/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
7/18 = 7 × 25/18 × 25 = 175/450 - Subtract the two like fractions:
1620/450 - 175/450 = 1620 - 175/450 = 1445/450 - After reducing the fraction, the answer is 289/90
- In mixed form: 319/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-14/18 90/50-7/18 90/25-7/36 90/25-21/18 90/75-7/18 90/25-7/54 90/25-35/18 90/25-7/90 90/25-49/18