Subtract 1/45 from 12/7
1st number: 1 5/7, 2nd number: 1/45
12/7 - 1/45 is 533/315.
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,
12/7 = 12 × 45/7 × 45 = 540/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
1/45 = 1 × 7/45 × 7 = 7/315 - Subtract the two like fractions:
540/315 - 7/315 = 540 - 7/315 = 533/315 - In mixed form: 1218/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/7-1/45 12/7-2/45 12/14-1/45 12/7-1/90 36/7-1/45 12/7-3/45 12/21-1/45 60/7-1/45 12/7-5/45 12/35-1/45 84/7-1/45 12/7-7/45 12/49-1/45