Subtract 20/70 from 63/27
1st number: 2 9/27, 2nd number: 20/70
63/27 - 20/70 is 43/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 70 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 27 × 70 = 1890,
63/27 = 63 × 70/27 × 70 = 4410/1890 - Likewise, for the 2nd fraction, since 70 × 27 = 1890,
20/70 = 20 × 27/70 × 27 = 540/1890 - Subtract the two like fractions:
4410/1890 - 540/1890 = 4410 - 540/1890 = 3870/1890 - After reducing the fraction, the answer is 43/21
- In mixed form: 21/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/27-40/70 63/54-20/70 63/27-60/70 63/81-20/70