Subtract 28/70 from 9/75
9/75 - 28/70 is -7/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 70 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 75 × 14 = 1050,
9/75 = 9 × 14/75 × 14 = 126/1050 - Likewise, for the 2nd fraction, since 70 × 15 = 1050,
28/70 = 28 × 15/70 × 15 = 420/1050 - Subtract the two like fractions:
126/1050 - 420/1050 = 126 - 420/1050 = -294/1050 - After reducing the fraction, the answer is -7/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/75-28/70 9/75-56/70 27/75-28/70 9/75-84/70 45/75-28/70 63/75-28/70