Subtract 45/30 from 9/72
1st number: 9/72, 2nd number: 1 15/30
9/72 - 45/30 is -11/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
45/30 = 45 × 12/30 × 12 = 540/360 - Subtract the two like fractions:
45/360 - 540/360 = 45 - 540/360 = -495/360 - After reducing the fraction, the answer is -11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/72-45/30 9/72-90/30 9/72-45/60 27/72-45/30 9/72-45/90 45/72-45/30 63/72-45/30