Subtract 3/45 from 12/72
12/72 - 3/45 is 1/10.
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,
12/72 = 12 × 5/72 × 5 = 60/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
3/45 = 3 × 8/45 × 8 = 24/360 - Subtract the two like fractions:
60/360 - 24/360 = 60 - 24/360 = 36/360 - After reducing the fraction, the answer is 1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72-3/45 12/72-6/45 12/72-3/90 36/72-3/45 12/72-9/45 60/72-3/45 12/72-15/45 84/72-3/45 12/72-21/45