Subtract 12/30 from 49/72
49/72 - 12/30 is 101/360.
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,
49/72 = 49 × 5/72 × 5 = 245/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
12/30 = 12 × 12/30 × 12 = 144/360 - Subtract the two like fractions:
245/360 - 144/360 = 245 - 144/360 = 101/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/72-12/30 49/72-24/30 49/72-12/60 49/72-36/30 49/72-12/90 49/72-60/30 49/72-84/30