Subtract 84/80 from 12/36
1st number: 12/36, 2nd number: 1 4/80
12/36 - 84/80 is -43/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 36 × 20 = 720,
12/36 = 12 × 20/36 × 20 = 240/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
84/80 = 84 × 9/80 × 9 = 756/720 - Subtract the two like fractions:
240/720 - 756/720 = 240 - 756/720 = -516/720 - After reducing the fraction, the answer is -43/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/36-84/80 12/72-84/80 60/36-84/80 84/36-84/80