Add 90/70 and 9/98
1st number: 1 20/70, 2nd number: 9/98
90/70 + 9/98 is 135/98.
Steps for adding 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,
90/70 = 90 × 7/70 × 7 = 630/490 - Likewise, for the 2nd fraction, since 98 × 5 = 490,
9/98 = 9 × 5/98 × 5 = 45/490 - Add the two like fractions:
630/490 + 45/490 = 630 + 45/490 = 675/490 - 675/490 simplified gives 135/98
- So, 90/70 + 9/98 = 135/98
In mixed form: 137/98
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+18/98 90/70+27/98 90/70+45/98 90/70+63/98