Subtract 9/70 from 12/9
1st number: 1 3/9, 2nd number: 9/70
12/9 - 9/70 is 253/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 9 × 70 = 630,
12/9 = 12 × 70/9 × 70 = 840/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
9/70 = 9 × 9/70 × 9 = 81/630 - Subtract the two like fractions:
840/630 - 81/630 = 840 - 81/630 = 759/630 - After reducing the fraction, the answer is 253/210
- In mixed form: 143/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/9-9/70 12/9-18/70 12/18-9/70 36/9-9/70 12/9-27/70 12/27-9/70 60/9-9/70 12/9-45/70 12/45-9/70 84/9-9/70 12/9-63/70 12/63-9/70