Subtract 70/45 from 27/18
1st number: 1 9/18, 2nd number: 1 25/45
27/18 - 70/45 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
27/18 = 27 × 5/18 × 5 = 135/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Subtract the two like fractions:
135/90 - 140/90 = 135 - 140/90 = -5/90 - After reducing the fraction, the answer is -1/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/18-70/45 27/36-70/45 27/18-70/90 81/18-70/45 27/54-70/45 27/90-70/45