Subtract 28/70 from 9/25
9/25 - 28/70 is -1/25.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 70 is 350
Next, find the equivalent fraction of both fractional numbers with denominator 350 - For the 1st fraction, since 25 × 14 = 350,
9/25 = 9 × 14/25 × 14 = 126/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
28/70 = 28 × 5/70 × 5 = 140/350 - Subtract the two like fractions:
126/350 - 140/350 = 126 - 140/350 = -14/350 - After reducing the fraction, the answer is -1/25
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/25-28/70 9/25-56/70 9/50-28/70 27/25-28/70 9/25-84/70 9/75-28/70 45/25-28/70 63/25-28/70