Subtract 9/10 from 7/72
7/72 - 9/10 is -289/360.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 10 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
7/72 = 7 × 5/72 × 5 = 35/360 - Likewise, for the 2nd fraction, since 10 × 36 = 360,
9/10 = 9 × 36/10 × 36 = 324/360 - Subtract the two like fractions:
35/360 - 324/360 = 35 - 324/360 = -289/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-9/10 7/72-18/10 7/72-9/20 21/72-9/10 7/72-27/10 7/72-9/30 35/72-9/10 7/72-45/10 7/72-9/50 49/72-9/10 7/72-63/10 7/72-9/70