Subtract 20/70 from 7/25
7/25 - 20/70 is -1/175.
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,
7/25 = 7 × 14/25 × 14 = 98/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
20/70 = 20 × 5/70 × 5 = 100/350 - Subtract the two like fractions:
98/350 - 100/350 = 98 - 100/350 = -2/350 - After reducing the fraction, the answer is -1/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/25-20/70 7/25-40/70 7/50-20/70 21/25-20/70 7/25-60/70 7/75-20/70 35/25-20/70 49/25-20/70