Subtract 27/40 from 9/70
9/70 - 27/40 is -153/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
9/70 = 9 × 4/70 × 4 = 36/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
27/40 = 27 × 7/40 × 7 = 189/280 - Subtract the two like fractions:
36/280 - 189/280 = 36 - 189/280 = -153/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/70-27/40 9/70-54/40 9/70-27/80 27/70-27/40 9/70-81/40 45/70-27/40 63/70-27/40