Subtract 27/49 from 30/70
30/70 - 27/49 is -6/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
30/70 = 30 × 7/70 × 7 = 210/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
27/49 = 27 × 10/49 × 10 = 270/490 - Subtract the two like fractions:
210/490 - 270/490 = 210 - 270/490 = -60/490 - After reducing the fraction, the answer is -6/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/70-27/49 30/70-54/49 30/70-27/98 90/70-27/49 30/70-81/49