Subtract 10/45 from 30/7
1st number: 4 2/7, 2nd number: 10/45
30/7 - 10/45 is 256/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
30/7 = 30 × 45/7 × 45 = 1350/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
10/45 = 10 × 7/45 × 7 = 70/315 - Subtract the two like fractions:
1350/315 - 70/315 = 1350 - 70/315 = 1280/315 - After reducing the fraction, the answer is 256/63
- In mixed form: 44/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7-10/45 30/7-20/45 30/14-10/45 30/7-10/90 90/7-10/45 30/7-30/45 30/21-10/45 30/7-50/45 30/35-10/45 30/7-70/45 30/49-10/45