Answers

Add 70/49 and 80/90

1^st number: 1 21/49, 2^nd number: 80/90

70/49 + 80/90 is 146/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 49 and 90 is 4410
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4410
2. For the 1st fraction, since 49 × 90 = 4410,
   70/49 = 70 × 90/49 × 90 = 6300/4410
3. Likewise, for the 2nd fraction, since 90 × 49 = 4410,
   80/90 = 80 × 49/90 × 49 = 3920/4410
4. Add the two like fractions:
   6300/4410 + 3920/4410 = 6300 + 3920/4410 = 10220/4410
5. 10220/4410 simplified gives 146/63
6. So, 70/49 + 80/90 = 146/63
   In mixed form: 220/63

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