Subtract 9/56 from 3/45
3/45 - 9/56 is -79/840.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 56 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 45 × 56 = 2520,
3/45 = 3 × 56/45 × 56 = 168/2520 - Likewise, for the 2nd fraction, since 56 × 45 = 2520,
9/56 = 9 × 45/56 × 45 = 405/2520 - Subtract the two like fractions:
168/2520 - 405/2520 = 168 - 405/2520 = -237/2520 - After reducing the fraction, the answer is -79/840
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/45-9/56 3/45-18/56 3/90-9/56 9/45-9/56 3/45-27/56 15/45-9/56 3/45-45/56 21/45-9/56 3/45-63/56