Subtract 18/70 from 20/36
20/36 - 18/70 is 94/315.
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,
20/36 = 20 × 35/36 × 35 = 700/1260 - Likewise, for the 2nd fraction, since 70 × 18 = 1260,
18/70 = 18 × 18/70 × 18 = 324/1260 - Subtract the two like fractions:
700/1260 - 324/1260 = 700 - 324/1260 = 376/1260 - After reducing the fraction, the answer is 94/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/36-18/70 20/36-36/70 20/72-18/70 60/36-18/70 20/36-54/70 20/36-90/70