Subtract 27/18 from 12/35
1st number: 12/35, 2nd number: 1 9/18
12/35 - 27/18 is -81/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 35 × 18 = 630,
12/35 = 12 × 18/35 × 18 = 216/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
27/18 = 27 × 35/18 × 35 = 945/630 - Subtract the two like fractions:
216/630 - 945/630 = 216 - 945/630 = -729/630 - After reducing the fraction, the answer is -81/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/35-27/18 12/35-54/18 12/70-27/18 12/35-27/36 36/35-27/18 12/35-81/18 12/35-27/54 60/35-27/18 12/35-27/90 84/35-27/18