Subtract 10/20 from 12/75
12/75 - 10/20 is -17/50.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 20 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 75 × 4 = 300,
12/75 = 12 × 4/75 × 4 = 48/300 - Likewise, for the 2nd fraction, since 20 × 15 = 300,
10/20 = 10 × 15/20 × 15 = 150/300 - Subtract the two like fractions:
48/300 - 150/300 = 48 - 150/300 = -102/300 - After reducing the fraction, the answer is -17/50
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/75-10/20 12/75-10/40 36/75-10/20 12/75-30/20 12/75-10/60 60/75-10/20 12/75-50/20 84/75-10/20 12/75-70/20