Subtract 12/70 from 7/98
7/98 - 12/70 is -1/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 70 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
7/98 = 7 × 5/98 × 5 = 35/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
12/70 = 12 × 7/70 × 7 = 84/490 - Subtract the two like fractions:
35/490 - 84/490 = 35 - 84/490 = -49/490 - After reducing the fraction, the answer is -1/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/98-12/70 7/98-24/70 21/98-12/70 7/98-36/70 35/98-12/70 7/98-60/70 49/98-12/70 7/98-84/70