Subtract 1/45 from 30/7
1st number: 4 2/7, 2nd number: 1/45
30/7 - 1/45 is 1343/315.
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,
1/45 = 1 × 7/45 × 7 = 7/315 - Subtract the two like fractions:
1350/315 - 7/315 = 1350 - 7/315 = 1343/315 - In mixed form: 483/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7-1/45 30/7-2/45 30/14-1/45 30/7-1/90 90/7-1/45 30/7-3/45 30/21-1/45 30/7-5/45 30/35-1/45 30/7-7/45 30/49-1/45