Subtract 70/75 from 10/20
10/20 - 70/75 is -13/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 20 × 15 = 300,
10/20 = 10 × 15/20 × 15 = 150/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
70/75 = 70 × 4/75 × 4 = 280/300 - Subtract the two like fractions:
150/300 - 280/300 = 150 - 280/300 = -130/300 - After reducing the fraction, the answer is -13/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/40-70/75 30/20-70/75 10/60-70/75 50/20-70/75 70/20-70/75