Subtract 5/36 from 21/70
21/70 - 5/36 is 29/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
21/70 = 21 × 18/70 × 18 = 378/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
5/36 = 5 × 35/36 × 35 = 175/1260 - Subtract the two like fractions:
378/1260 - 175/1260 = 378 - 175/1260 = 203/1260 - After reducing the fraction, the answer is 29/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/70-5/36 21/70-10/36 21/70-5/72 63/70-5/36 21/70-15/36 21/70-25/36 21/70-35/36