Subtract 72/10 from 12/16
1st number: 12/16, 2nd number: 7 2/10
12/16 - 72/10 is -129/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 10 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 16 × 5 = 80,
12/16 = 12 × 5/16 × 5 = 60/80 - Likewise, for the 2nd fraction, since 10 × 8 = 80,
72/10 = 72 × 8/10 × 8 = 576/80 - Subtract the two like fractions:
60/80 - 576/80 = 60 - 576/80 = -516/80 - After reducing the fraction, the answer is -129/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/16-72/10 12/32-72/10 12/16-72/20 36/16-72/10 12/48-72/10 12/16-72/30 60/16-72/10 12/80-72/10 12/16-72/50 84/16-72/10 12/16-72/70