Subtract 18/75 from 2/90
2/90 - 18/75 is -49/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 75 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 90 × 5 = 450,
2/90 = 2 × 5/90 × 5 = 10/450 - Likewise, for the 2nd fraction, since 75 × 6 = 450,
18/75 = 18 × 6/75 × 6 = 108/450 - Subtract the two like fractions:
10/450 - 108/450 = 10 - 108/450 = -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: 4/90-18/75 2/90-36/75 6/90-18/75 2/90-54/75 10/90-18/75 2/90-90/75 14/90-18/75