Subtract 84/9 from 12/70
1st number: 12/70, 2nd number: 9 3/9
12/70 - 84/9 is -962/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 9 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
12/70 = 12 × 9/70 × 9 = 108/630 - Likewise, for the 2nd fraction, since 9 × 70 = 630,
84/9 = 84 × 70/9 × 70 = 5880/630 - Subtract the two like fractions:
108/630 - 5880/630 = 108 - 5880/630 = -5772/630 - After reducing the fraction, the answer is -962/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/70-84/9 12/70-84/18 36/70-84/9 12/70-84/27 60/70-84/9 12/70-84/45 84/70-84/9 12/70-84/63