Subtract 90/70 from 8/98
1st number: 8/98, 2nd number: 1 20/70
8/98 - 90/70 is -59/49.
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,
8/98 = 8 × 5/98 × 5 = 40/490 - Likewise, for the 2nd fraction, since 70 × 7 = 490,
90/70 = 90 × 7/70 × 7 = 630/490 - Subtract the two like fractions:
40/490 - 630/490 = 40 - 630/490 = -590/490 - After reducing the fraction, the answer is -59/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/98-90/70 24/98-90/70 40/98-90/70 56/98-90/70