Subtract 12/45 from 2/70
2/70 - 12/45 is -5/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
2/70 = 2 × 9/70 × 9 = 18/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
12/45 = 12 × 14/45 × 14 = 168/630 - Subtract the two like fractions:
18/630 - 168/630 = 18 - 168/630 = -150/630 - After reducing the fraction, the answer is -5/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/70-12/45 2/70-24/45 2/70-12/90 6/70-12/45 2/70-36/45 10/70-12/45 2/70-60/45 14/70-12/45 2/70-84/45