Subtract 70/63 from 20/6
1st number: 3 2/6, 2nd number: 1 7/63
20/6 - 70/63 is 20/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 6 × 21 = 126,
20/6 = 20 × 21/6 × 21 = 420/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
70/63 = 70 × 2/63 × 2 = 140/126 - Subtract the two like fractions:
420/126 - 140/126 = 420 - 140/126 = 280/126 - After reducing the fraction, the answer is 20/9
- In mixed form: 22/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/6-70/63 20/12-70/63 60/6-70/63 20/18-70/63 20/30-70/63 20/42-70/63