Answers

Add 63/98 and 45/70

63/98 + 45/70 is 9/7.

Steps for adding fractions

1. 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
2. For the 1st fraction, since 98 × 5 = 490,
   63/98 = 63 × 5/98 × 5 = 315/490
3. Likewise, for the 2nd fraction, since 70 × 7 = 490,
   45/70 = 45 × 7/70 × 7 = 315/490
4. Add the two like fractions:
   315/490 + 315/490 = 315 + 315/490 = 630/490
5. 630/490 simplified gives 9/7
6. So, 63/98 + 45/70 = 9/7
   In mixed form: 12/7

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