Subtract 5/70 from 18/49
18/49 - 5/70 is 29/98.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
18/49 = 18 × 10/49 × 10 = 180/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
5/70 = 5 × 7/70 × 7 = 35/490 - Subtract the two like fractions:
180/490 - 35/490 = 180 - 35/490 = 145/490 - After reducing the fraction, the answer is 29/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/49-5/70 18/49-10/70 18/98-5/70 54/49-5/70 18/49-15/70 90/49-5/70 18/49-25/70 18/49-35/70