Subtract 4/36 from 70/20
1st number: 3 10/20, 2nd number: 4/36
70/20 - 4/36 is 61/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
70/20 = 70 × 9/20 × 9 = 630/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
4/36 = 4 × 5/36 × 5 = 20/180 - Subtract the two like fractions:
630/180 - 20/180 = 630 - 20/180 = 610/180 - After reducing the fraction, the answer is 61/18
- In mixed form: 37/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/20-8/36 70/40-4/36 70/20-4/72 70/20-12/36 70/60-4/36 70/20-20/36 70/20-28/36