Subtract 3/18 from 70/90
70/90 - 3/18 is 11/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
3/18 = 3 × 5/18 × 5 = 15/90 - Subtract the two like fractions:
70/90 - 15/90 = 70 - 15/90 = 55/90 - After reducing the fraction, the answer is 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90-6/18 70/90-3/36 70/90-9/18 70/90-3/54 70/90-15/18 70/90-3/90 70/90-21/18