Subtract 9/25 from 12/45
12/45 - 9/25 is -7/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 25 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 45 × 5 = 225,
12/45 = 12 × 5/45 × 5 = 60/225 - Likewise, for the 2nd fraction, since 25 × 9 = 225,
9/25 = 9 × 9/25 × 9 = 81/225 - Subtract the two like fractions:
60/225 - 81/225 = 60 - 81/225 = -21/225 - After reducing the fraction, the answer is -7/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/45-9/25 12/45-18/25 12/90-9/25 12/45-9/50 36/45-9/25 12/45-27/25 12/45-9/75 60/45-9/25 12/45-45/25 84/45-9/25 12/45-63/25