Answers

Add 70/90 and 90/98

70/90 + 90/98 is 748/441.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 98 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 90 × 49 = 4410,
   70/90 = 70 × 49/90 × 49 = 3430/4410
3. Likewise, for the 2nd fraction, since 98 × 45 = 4410,
   90/98 = 90 × 45/98 × 45 = 4050/4410
4. Add the two like fractions:
   3430/4410 + 4050/4410 = 3430 + 4050/4410 = 7480/4410
5. 7480/4410 simplified gives 748/441
6. So, 70/90 + 90/98 = 748/441
   In mixed form: 1307/441

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad

Related:

Add Fractions Calculator