Subtract 84/80 from 7/12
1st number: 7/12, 2nd number: 1 4/80
7/12 - 84/80 is -7/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 12 × 20 = 240,
7/12 = 7 × 20/12 × 20 = 140/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
84/80 = 84 × 3/80 × 3 = 252/240 - Subtract the two like fractions:
140/240 - 252/240 = 140 - 252/240 = -112/240 - After reducing the fraction, the answer is -7/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/12-84/80 7/24-84/80 21/12-84/80 7/36-84/80 35/12-84/80 7/60-84/80 49/12-84/80 7/84-84/80