Subtract 9/45 from 4/7
4/7 - 9/45 is 13/35.
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,
4/7 = 4 × 45/7 × 45 = 180/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
9/45 = 9 × 7/45 × 7 = 63/315 - Subtract the two like fractions:
180/315 - 63/315 = 180 - 63/315 = 117/315 - After reducing the fraction, the answer is 13/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-9/45 4/7-18/45 4/14-9/45 4/7-9/90 12/7-9/45 4/7-27/45 4/21-9/45 20/7-9/45 4/35-9/45 28/7-9/45 4/7-63/45 4/49-9/45