Subtract 80/70 from 30/25
1st number: 1 5/25, 2nd number: 1 10/70
30/25 - 80/70 is 2/35.
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,
30/25 = 30 × 14/25 × 14 = 420/350 - Likewise, for the 2nd fraction, since 70 × 5 = 350,
80/70 = 80 × 5/70 × 5 = 400/350 - Subtract the two like fractions:
420/350 - 400/350 = 420 - 400/350 = 20/350 - After reducing the fraction, the answer is 2/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/25-80/70 30/50-80/70 90/25-80/70 30/75-80/70