Subtract 8/98 from 50/70
50/70 - 8/98 is 31/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 98 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
50/70 = 50 × 7/70 × 7 = 350/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
8/98 = 8 × 5/98 × 5 = 40/490 - Subtract the two like fractions:
350/490 - 40/490 = 350 - 40/490 = 310/490 - After reducing the fraction, the answer is 31/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/70-16/98 50/70-24/98 50/70-40/98 50/70-56/98