Subtract 48/90 from 18/75
18/75 - 48/90 is -22/75.
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,
48/90 = 48 × 5/90 × 5 = 240/450 - Subtract the two like fractions:
108/450 - 240/450 = 108 - 240/450 = -132/450 - After reducing the fraction, the answer is -22/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/75-48/90 18/75-96/90 54/75-48/90 90/75-48/90