Subtract 16/18 from 27/70
27/70 - 16/18 is -317/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 18 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
27/70 = 27 × 9/70 × 9 = 243/630 - Likewise, for the 2nd fraction, since 18 × 35 = 630,
16/18 = 16 × 35/18 × 35 = 560/630 - Subtract the two like fractions:
243/630 - 560/630 = 243 - 560/630 = -317/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/70-16/18 27/70-32/18 27/70-16/36 81/70-16/18 27/70-48/18 27/70-16/54 27/70-80/18 27/70-16/90