Subtract 7/45 from 12/49
12/49 - 7/45 is 197/2205.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 45 is 2205
Next, find the equivalent fraction of both fractional numbers with denominator 2205 - For the 1st fraction, since 49 × 45 = 2205,
12/49 = 12 × 45/49 × 45 = 540/2205 - Likewise, for the 2nd fraction, since 45 × 49 = 2205,
7/45 = 7 × 49/45 × 49 = 343/2205 - Subtract the two like fractions:
540/2205 - 343/2205 = 540 - 343/2205 = 197/2205
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/49-7/45 12/49-14/45 12/98-7/45 12/49-7/90 36/49-7/45 12/49-21/45 60/49-7/45 12/49-35/45 84/49-7/45 12/49-49/45