Subtract 84/9 from 70/12
1st number: 5 10/12, 2nd number: 9 3/9
70/12 - 84/9 is -7/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 9 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
70/12 = 70 × 3/12 × 3 = 210/36 - Likewise, for the 2nd fraction, since 9 × 4 = 36,
84/9 = 84 × 4/9 × 4 = 336/36 - Subtract the two like fractions:
210/36 - 336/36 = 210 - 336/36 = -126/36 - After reducing the fraction, the answer is -7/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/24-84/9 70/12-84/18 70/36-84/9 70/12-84/27 70/60-84/9 70/12-84/45 70/84-84/9 70/12-84/63