Subtract 8/45 from 30/7
1st number: 4 2/7, 2nd number: 8/45
30/7 - 8/45 is 1294/315.
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,
8/45 = 8 × 7/45 × 7 = 56/315 - Subtract the two like fractions:
1350/315 - 56/315 = 1350 - 56/315 = 1294/315 - In mixed form: 434/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/7-8/45 30/7-16/45 30/14-8/45 30/7-8/90 90/7-8/45 30/7-24/45 30/21-8/45 30/7-40/45 30/35-8/45 30/7-56/45 30/49-8/45