Subtract 30/45 from 1/72
1/72 - 30/45 is -47/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
1/72 = 1 × 5/72 × 5 = 5/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
30/45 = 30 × 8/45 × 8 = 240/360 - Subtract the two like fractions:
5/360 - 240/360 = 5 - 240/360 = -235/360 - After reducing the fraction, the answer is -47/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/72-30/45 1/72-60/45 1/72-30/90 3/72-30/45 1/72-90/45 5/72-30/45 7/72-30/45