Subtract 5/70 from 18/36
18/36 - 5/70 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 70 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 36 × 35 = 1260,
18/36 = 18 × 35/36 × 35 = 630/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
5/70 = 5 × 18/70 × 18 = 90/1260 - Subtract the two like fractions:
630/1260 - 90/1260 = 630 - 90/1260 = 540/1260 - After reducing the fraction, the answer is 3/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/36-10/70 18/72-5/70 54/36-5/70 18/36-15/70 90/36-5/70 18/36-25/70 18/36-35/70