Subtract 20/10 from 8/72
1st number: 8/72, 2nd number: 2 0/10
8/72 - 20/10 is -17/9.
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,
8/72 = 8 × 5/72 × 5 = 40/360 - Likewise, for the 2nd fraction, since 10 × 36 = 360,
20/10 = 20 × 36/10 × 36 = 720/360 - Subtract the two like fractions:
40/360 - 720/360 = 40 - 720/360 = -680/360 - After reducing the fraction, the answer is -17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/72-20/10 8/72-40/10 24/72-20/10 8/72-60/10 8/72-20/30 40/72-20/10 8/72-20/50 56/72-20/10 8/72-20/70