Subtract 2/90 from 18/75
18/75 - 2/90 is 49/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 75 × 6 = 450,
18/75 = 18 × 6/75 × 6 = 108/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
2/90 = 2 × 5/90 × 5 = 10/450 - Subtract the two like fractions:
108/450 - 10/450 = 108 - 10/450 = 98/450 - After reducing the fraction, the answer is 49/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/75-2/90 18/75-4/90 54/75-2/90 18/75-6/90 90/75-2/90 18/75-10/90 18/75-14/90