Subtract 70/90 from 8/27
8/27 - 70/90 is -13/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 90 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 27 × 10 = 270,
8/27 = 8 × 10/27 × 10 = 80/270 - Likewise, for the 2nd fraction, since 90 × 3 = 270,
70/90 = 70 × 3/90 × 3 = 210/270 - Subtract the two like fractions:
80/270 - 210/270 = 80 - 210/270 = -130/270 - After reducing the fraction, the answer is -13/27
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/27-70/90 8/54-70/90 24/27-70/90 8/81-70/90 40/27-70/90 56/27-70/90