Subtract 30/7 from 45/25
1st number: 1 20/25, 2nd number: 4 2/7
45/25 - 30/7 is -87/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
45/25 = 45 × 7/25 × 7 = 315/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
30/7 = 30 × 25/7 × 25 = 750/175 - Subtract the two like fractions:
315/175 - 750/175 = 315 - 750/175 = -435/175 - After reducing the fraction, the answer is -87/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-30/7 45/25-60/7 45/50-30/7 45/25-30/14 45/25-90/7 45/75-30/7 45/25-30/21 45/25-30/35 45/25-30/49