Subtract 90/60 from 18/75
1st number: 18/75, 2nd number: 1 30/60
18/75 - 90/60 is -63/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 60 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
18/75 = 18 × 4/75 × 4 = 72/300 - Likewise, for the 2nd fraction, since 60 × 5 = 300,
90/60 = 90 × 5/60 × 5 = 450/300 - Subtract the two like fractions:
72/300 - 450/300 = 72 - 450/300 = -378/300 - After reducing the fraction, the answer is -63/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/75-90/60 54/75-90/60 90/75-90/60